--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ED/microdata-rdf/20120320/diff-20120112.html Fri Mar 02 13:39:57 2012 -0800
@@ -0,0 +1,9938 @@
+<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN' 'http://www.w3.org/TR/html4/loose.dtd'>
+<html lang="en" dir="ltr">
+<head>
+<title>Microdata to RDF</title>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<!--
+ === NOTA BENE ===
+ For the three scripts below, if your spec resides on dev.w3 you can check them
+ out in the same tree and use relative links so that they'll work offline,
+ -->
+
+
+<style type="text/css">
+.diff { font-weight:bold; color:#0a3; }
+ol.algorithm { counter-reset:numsection; list-style-type: none; }
+ol.algorithm li { margin: 0.5em 0; }
+ol.algorithm li:before {
+ font-weight: bold;
+ counter-increment: numsection;
+ content: counters(numsection, ".") ") ";
+}
+dl.triple { padding: 0 0 0 1em; }
+dl.triple dt, dl.triple dd { margin: 0; display: inline }
+dl.triple dt:after { content: ':'; }
+dl.triple dd:after { content: '\A'; white-space: pre; }
+.adef {
+ font-family: monospace;
+ font-weight: bold;
+ color: #ff4500 !important;
+}
+
+.aref {
+ font-family: monospace;
+ font-weight: bold;
+ color: #ff4500 !important;
+}
+
+span.entity { color: red; }
+
+span.element { color: green; }
+</style>
+<style type="text/css">
+/*****************************************************************
+ * ReSpec CSS
+ * Robin Berjon (robin at berjon dot com)
+ * v0.05 - 2009-07-31
+ *****************************************************************/
+
+
+/* --- INLINES --- */
+em.rfc2119 {
+ text-transform: lowercase;
+ font-variant: small-caps;
+ font-style: normal;
+ color: #900;
+}
+
+h1 acronym, h2 acronym, h3 acronym, h4 acronym, h5 acronym, h6 acronym, a acronym,
+h1 abbr, h2 abbr, h3 abbr, h4 abbr, h5 abbr, h6 abbr, a abbr {
+ border: none;
+}
+
+dfn {
+ font-weight: bold;
+}
+
+a.internalDFN {
+ color: inherit;
+ border-bottom: 1px solid #99c;
+ text-decoration: none;
+}
+
+a.externalDFN {
+ color: inherit;
+ border-bottom: 1px dotted #ccc;
+ text-decoration: none;
+}
+
+a.bibref {
+ text-decoration: none;
+}
+
+code {
+ color: #ff4500;
+}
+
+
+/* --- WEB IDL --- */
+pre.idl {
+ border-top: 1px solid #90b8de;
+ border-bottom: 1px solid #90b8de;
+ padding: 1em;
+ line-height: 120%;
+}
+
+pre.idl::before {
+ content: "WebIDL";
+ display: block;
+ width: 150px;
+ background: #90b8de;
+ color: #fff;
+ font-family: initial;
+ padding: 3px;
+ font-weight: bold;
+ margin: -1em 0 1em -1em;
+}
+
+.idlType {
+ color: #ff4500;
+ font-weight: bold;
+ text-decoration: none;
+}
+
+/*.idlModule*/
+/*.idlModuleID*/
+/*.idlInterface*/
+.idlInterfaceID, .idlDictionaryID {
+ font-weight: bold;
+ color: #005a9c;
+}
+
+.idlSuperclass {
+ font-style: italic;
+ color: #005a9c;
+}
+
+/*.idlAttribute*/
+.idlAttrType, .idlFieldType, .idlMemberType {
+ color: #005a9c;
+}
+.idlAttrName, .idlFieldName, .idlMemberName {
+ color: #ff4500;
+}
+.idlAttrName a, .idlFieldName a, .idlMemberName a {
+ color: #ff4500;
+ border-bottom: 1px dotted #ff4500;
+ text-decoration: none;
+}
+
+/*.idlMethod*/
+.idlMethType {
+ color: #005a9c;
+}
+.idlMethName {
+ color: #ff4500;
+}
+.idlMethName a {
+ color: #ff4500;
+ border-bottom: 1px dotted #ff4500;
+ text-decoration: none;
+}
+
+/*.idlParam*/
+.idlParamType {
+ color: #005a9c;
+}
+.idlParamName {
+ font-style: italic;
+}
+
+.extAttr {
+ color: #666;
+}
+
+/*.idlConst*/
+.idlConstType {
+ color: #005a9c;
+}
+.idlConstName {
+ color: #ff4500;
+}
+.idlConstName a {
+ color: #ff4500;
+ border-bottom: 1px dotted #ff4500;
+ text-decoration: none;
+}
+
+/*.idlException*/
+.idlExceptionID {
+ font-weight: bold;
+ color: #c00;
+}
+
+.idlTypedefID, .idlTypedefType {
+ color: #005a9c;
+}
+
+.idlRaises, .idlRaises a.idlType, .idlRaises a.idlType code, .excName a, .excName a code {
+ color: #c00;
+ font-weight: normal;
+}
+
+.excName a {
+ font-family: monospace;
+}
+
+.idlRaises a.idlType, .excName a.idlType {
+ border-bottom: 1px dotted #c00;
+}
+
+.excGetSetTrue, .excGetSetFalse, .prmNullTrue, .prmNullFalse, .prmOptTrue, .prmOptFalse {
+ width: 45px;
+ text-align: center;
+}
+.excGetSetTrue, .prmNullTrue, .prmOptTrue { color: #0c0; }
+.excGetSetFalse, .prmNullFalse, .prmOptFalse { color: #c00; }
+
+.idlImplements a {
+ font-weight: bold;
+}
+
+dl.attributes, dl.methods, dl.constants, dl.fields, dl.dictionary-members {
+ margin-left: 2em;
+}
+
+.attributes dt, .methods dt, .constants dt, .fields dt, .dictionary-members dt {
+ font-weight: normal;
+}
+
+.attributes dt code, .methods dt code, .constants dt code, .fields dt code, .dictionary-members dt code {
+ font-weight: bold;
+ color: #000;
+ font-family: monospace;
+}
+
+.attributes dt code, .fields dt code, .dictionary-members dt code {
+ background: #ffffd2;
+}
+
+.attributes dt .idlAttrType code, .fields dt .idlFieldType code, .dictionary-members dt .idlMemberType code {
+ color: #005a9c;
+ background: transparent;
+ font-family: inherit;
+ font-weight: normal;
+ font-style: italic;
+}
+
+.methods dt code {
+ background: #d9e6f8;
+}
+
+.constants dt code {
+ background: #ddffd2;
+}
+
+.attributes dd, .methods dd, .constants dd, .fields dd, .dictionary-members dd {
+ margin-bottom: 1em;
+}
+
+table.parameters, table.exceptions {
+ border-spacing: 0;
+ border-collapse: collapse;
+ margin: 0.5em 0;
+ width: 100%;
+}
+table.parameters { border-bottom: 1px solid #90b8de; }
+table.exceptions { border-bottom: 1px solid #deb890; }
+
+.parameters th, .exceptions th {
+ color: #fff;
+ padding: 3px 5px;
+ text-align: left;
+ font-family: initial;
+ font-weight: normal;
+ text-shadow: #666 1px 1px 0;
+}
+.parameters th { background: #90b8de; }
+.exceptions th { background: #deb890; }
+
+.parameters td, .exceptions td {
+ padding: 3px 10px;
+ border-top: 1px solid #ddd;
+ vertical-align: top;
+}
+
+.parameters tr:first-child td, .exceptions tr:first-child td {
+ border-top: none;
+}
+
+.parameters td.prmName, .exceptions td.excName, .exceptions td.excCodeName {
+ width: 100px;
+}
+
+.parameters td.prmType {
+ width: 120px;
+}
+
+table.exceptions table {
+ border-spacing: 0;
+ border-collapse: collapse;
+ width: 100%;
+}
+
+/* --- TOC --- */
+.toc a {
+ text-decoration: none;
+}
+
+a .secno {
+ color: #000;
+}
+
+/* --- TABLE --- */
+table.simple {
+ border-spacing: 0;
+ border-collapse: collapse;
+ border-bottom: 3px solid #005a9c;
+}
+
+.simple th {
+ background: #005a9c;
+ color: #fff;
+ padding: 3px 5px;
+ text-align: left;
+}
+
+.simple th[scope="row"] {
+ background: inherit;
+ color: inherit;
+ border-top: 1px solid #ddd;
+}
+
+.simple td {
+ padding: 3px 10px;
+ border-top: 1px solid #ddd;
+}
+
+.simple tr:nth-child(even) {
+ background: #f0f6ff;
+}
+
+/* --- DL --- */
+.section dd > p:first-child {
+ margin-top: 0;
+}
+
+.section dd > p:last-child {
+ margin-bottom: 0;
+}
+
+.section dd {
+ margin-bottom: 1em;
+}
+
+.section dl.attrs dd, .section dl.eldef dd {
+ margin-bottom: 0;
+}
+
+/* --- EXAMPLES --- */
+pre.example {
+ border-top: 1px solid #ff4500;
+ border-bottom: 1px solid #ff4500;
+ padding: 1em;
+ margin-top: 1em;
+}
+
+pre.example::before {
+ content: "Example";
+ display: block;
+ width: 150px;
+ background: #ff4500;
+ color: #fff;
+ font-family: initial;
+ padding: 3px;
+ font-weight: bold;
+ margin: -1em 0 1em -1em;
+}
+
+/* --- EDITORIAL NOTES --- */
+.issue {
+ padding: 1em;
+ margin: 1em 0em 0em;
+ border: 1px solid #f00;
+ background: #ffc;
+}
+
+.issue::before {
+ content: "Issue";
+ display: block;
+ width: 150px;
+ margin: -1.5em 0 0.5em 0;
+ font-weight: bold;
+ border: 1px solid #f00;
+ background: #fff;
+ padding: 3px 1em;
+}
+
+.note {
+ margin: 1em 0em 0em;
+ padding: 1em;
+ border: 2px solid #cff6d9;
+ background: #e2fff0;
+}
+
+.note::before {
+ content: "Note";
+ display: block;
+ width: 150px;
+ margin: -1.5em 0 0.5em 0;
+ font-weight: bold;
+ border: 1px solid #cff6d9;
+ background: #fff;
+ padding: 3px 1em;
+}
+
+/* --- Best Practices --- */
+div.practice {
+ border: solid #bebebe 1px;
+ margin: 2em 1em 1em 2em;
+}
+
+span.practicelab {
+ margin: 1.5em 0.5em 1em 1em;
+ font-weight: bold;
+ font-style: italic;
+}
+
+span.practicelab { background: #dfffff; }
+
+span.practicelab {
+ position: relative;
+ padding: 0 0.5em;
+ top: -1.5em;
+}
+
+p.practicedesc {
+ margin: 1.5em 0.5em 1em 1em;
+}
+
+@media screen {
+ p.practicedesc {
+ position: relative;
+ top: -2em;
+ padding: 0;
+ margin: 1.5em 0.5em -1em 1em;
+ }
+}
+
+/* --- SYNTAX HIGHLIGHTING --- */
+pre.sh_sourceCode {
+ background-color: white;
+ color: black;
+ font-style: normal;
+ font-weight: normal;
+}
+
+pre.sh_sourceCode .sh_keyword { color: #005a9c; font-weight: bold; } /* language keywords */
+pre.sh_sourceCode .sh_type { color: #666; } /* basic types */
+pre.sh_sourceCode .sh_usertype { color: teal; } /* user defined types */
+pre.sh_sourceCode .sh_string { color: red; font-family: monospace; } /* strings and chars */
+pre.sh_sourceCode .sh_regexp { color: orange; font-family: monospace; } /* regular expressions */
+pre.sh_sourceCode .sh_specialchar { color: #ffc0cb; font-family: monospace; } /* e.g., \n, \t, \\ */
+pre.sh_sourceCode .sh_comment { color: #A52A2A; font-style: italic; } /* comments */
+pre.sh_sourceCode .sh_number { color: purple; } /* literal numbers */
+pre.sh_sourceCode .sh_preproc { color: #00008B; font-weight: bold; } /* e.g., #include, import */
+pre.sh_sourceCode .sh_symbol { color: blue; } /* e.g., *, + */
+pre.sh_sourceCode .sh_function { color: black; font-weight: bold; } /* function calls and declarations */
+pre.sh_sourceCode .sh_cbracket { color: red; } /* block brackets (e.g., {, }) */
+pre.sh_sourceCode .sh_todo { font-weight: bold; background-color: #00FFFF; } /* TODO and FIXME */
+
+/* Predefined variables and functions (for instance glsl) */
+pre.sh_sourceCode .sh_predef_var { color: #00008B; }
+pre.sh_sourceCode .sh_predef_func { color: #00008B; font-weight: bold; }
+
+/* for OOP */
+pre.sh_sourceCode .sh_classname { color: teal; }
+
+/* line numbers (not yet implemented) */
+pre.sh_sourceCode .sh_linenum { display: none; }
+
+/* Internet related */
+pre.sh_sourceCode .sh_url { color: blue; text-decoration: underline; font-family: monospace; }
+
+/* for ChangeLog and Log files */
+pre.sh_sourceCode .sh_date { color: blue; font-weight: bold; }
+pre.sh_sourceCode .sh_time, pre.sh_sourceCode .sh_file { color: #00008B; font-weight: bold; }
+pre.sh_sourceCode .sh_ip, pre.sh_sourceCode .sh_name { color: #006400; }
+
+/* for Prolog, Perl... */
+pre.sh_sourceCode .sh_variable { color: #006400; }
+
+/* for LaTeX */
+pre.sh_sourceCode .sh_italics { color: #006400; font-style: italic; }
+pre.sh_sourceCode .sh_bold { color: #006400; font-weight: bold; }
+pre.sh_sourceCode .sh_underline { color: #006400; text-decoration: underline; }
+pre.sh_sourceCode .sh_fixed { color: green; font-family: monospace; }
+pre.sh_sourceCode .sh_argument { color: #006400; }
+pre.sh_sourceCode .sh_optionalargument { color: purple; }
+pre.sh_sourceCode .sh_math { color: orange; }
+pre.sh_sourceCode .sh_bibtex { color: blue; }
+
+/* for diffs */
+pre.sh_sourceCode .sh_oldfile { color: orange; }
+pre.sh_sourceCode .sh_newfile { color: #006400; }
+pre.sh_sourceCode .sh_difflines { color: blue; }
+
+/* for css */
+pre.sh_sourceCode .sh_selector { color: purple; }
+pre.sh_sourceCode .sh_property { color: blue; }
+pre.sh_sourceCode .sh_value { color: #006400; font-style: italic; }
+
+/* other */
+pre.sh_sourceCode .sh_section { color: black; font-weight: bold; }
+pre.sh_sourceCode .sh_paren { color: red; }
+pre.sh_sourceCode .sh_attribute { color: #006400; }
+
+</style><link href="http://www.w3.org/StyleSheets/TR/W3C-IG-NOTE" rel="stylesheet" type="text/css" charset="utf-8"><style type='text/css'>
+.diff-old-a {
+ font-size: smaller;
+ color: red;
+}
+
+.diff-new { background-color: yellow; }
+.diff-chg { background-color: lime; }
+.diff-new:before,
+.diff-new:after
+ { content: "\2191" }
+.diff-chg:before, .diff-chg:after
+ { content: "\2195" }
+.diff-old { text-decoration: line-through; background-color: #FBB; }
+.diff-old:before,
+.diff-old:after
+ { content: "\2193" }
+:focus { border: thin red solid}
+</style>
+</head>
+
+
+<body style="display: inherit; ">
+<div class="head">
+<p>
+<a href="http://www.w3.org/">
+<img width="72" height="48" src="http://www.w3.org/Icons/w3c_home" alt="W3C">
+</a>
+</p>
+<h1 class="title" id="title">
+Microdata
+to
+RDF
+</h1>
+<h2 id="subtitle">
+Transformation
+from
+HTML+Microdata
+to
+RDF
+</h2>
+<h2 id="w3c-interest-group-note-08-march-2012">
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+<del class="diff-old">Working
+Draft
+12
+January
+</del>
+<ins class="diff-chg">Interest
+Group
+Note
+08
+March
+</ins>
+2012
+</h2>
+<dl>
+<dt>
+This
+version:
+</dt>
+<dd>
+<del class="diff-old">http://www.w3.org/TR/2012/WD-microdata-rdf-20120112/
+</del>
+<a href="http://www.w3.org/TR/2012/NOTE-microdata-rdf-20120308/">
+<ins class="diff-chg">http://www.w3.org/TR/2012/NOTE-microdata-rdf-20120308/
+</ins>
+</a>
+</dd>
+<dt>
+Latest
+published
+version:
+</dt>
+<dd>
+<a href="http://www.w3.org/TR/microdata-rdf/">
+http://www.w3.org/TR/microdata-rdf/
+</a>
+</dd>
+<dt>
+<del class="diff-old">Latest
+editor's
+draft:
+</del>
+<ins class="diff-chg">Previous
+version:
+</ins>
+</dt>
+<dd>
+<del class="diff-old">https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-rdf/index.html
+</del>
+<a href="http://www.w3.org/TR/2012/WD-microdata-rdf-20120112/">
+<ins class="diff-chg">http://www.w3.org/TR/2012/WD-microdata-rdf-20120112/
+</ins>
+</a>
+</dd>
+<dt>
+Editor:
+</dt>
+<dd>
+<a href="http://greggkellogg.net/">
+Gregg
+Kellogg
+</a>,
+Kellogg
+Associates
+</dd>
+<dt>
+Authors:
+</dt>
+<dd>
+<a href="mailto:ian@hixie.ch">
+Ian
+Hickson
+</a>,
+Google,
+Inc.
+</dd>
+<dd>
+<a href="http://greggkellogg.net/">
+Gregg
+Kellogg
+</a>,
+Kellogg
+Associates
+</dd>
+<dd>
+<a href="http://www.jenitennison.com/">
+Jeni
+Tennison
+</a>,
+Independent
+</dd>
+<dd>
+<a href="http://www.w3.org/People/Ivan/">
+<ins class="diff-new">Iv�n
+Herman
+</ins></a>,<a href="http://www.w3.org"><acronym title="World Wide Web Consortium"><ins class="diff-new">
+W3C
+</ins></acronym></a></dd>
+</dl>
+<p>
+<ins class="diff-new">This
+document
+is
+also
+available
+in
+this
+non-normative
+format:
+</ins><a href="diff-20120112.html"><ins class="diff-new">
+diff
+to
+previous
+version
+</ins></a>.</p>
+<p class="copyright">
+<a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">
+Copyright
+</a>
+<del class="diff-old">©
+2012
+</del>
+<ins class="diff-chg">�
+2011-2012
+</ins>
+<a href="http://www.w3.org/">
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+</a>
+<sup>
+<del class="diff-old">®
+</del>
+<ins class="diff-chg">�
+</ins>
+</sup>
+(
+<a href="http://www.csail.mit.edu/">
+<acronym title="Massachusetts Institute of Technology">
+MIT
+</acronym>
+</a>,
+<a href="http://www.ercim.eu/">
+<acronym title="European Research Consortium for Informatics and Mathematics">
+ERCIM
+</acronym>
+</a>,
+<a href="http://www.keio.ac.jp/">
+Keio
+</a>
+),
+All
+Rights
+Reserved.
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+<a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">
+liability
+</a>,
+<a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">
+trademark
+</a>
+and
+<a href="http://www.w3.org/Consortium/Legal/copyright-documents">
+document
+use
+</a>
+rules
+apply.
+</p>
+<hr>
+</div>
+<div id="abstract" class="introductory section">
+<h2>
+Abstract
+</h2>
+<p>
+HTML
+microdata
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]
+is
+an
+extension
+to
+HTML
+used
+to
+embed
+machine-readable
+data
+into
+HTML
+documents.
+Whereas
+the
+microdata
+specification
+describes
+a
+means
+of
+markup,
+the
+output
+format
+is
+JSON.
+This
+specification
+describes
+processing
+rules
+that
+may
+be
+used
+to
+extract
+RDF
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-CONCEPTS">
+RDF-CONCEPTS
+</a>
+</cite>
+]
+from
+an
+HTML
+document
+containing
+microdata.
+</p>
+</div>
+<div id="sotd" class="introductory section">
+<h2>
+Status
+of
+This
+Document
+</h2>
+<p>
+<em>
+This
+section
+describes
+the
+status
+of
+this
+document
+at
+the
+time
+of
+its
+publication.
+Other
+documents
+may
+supersede
+this
+document.
+A
+list
+of
+current
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+publications
+and
+the
+latest
+revision
+of
+this
+technical
+report
+can
+be
+found
+in
+the
+<a href="http://www.w3.org/TR/">
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+technical
+reports
+index
+</a>
+at
+http://www.w3.org/TR/.
+</em>
+</p>
+<p>
+This
+document
+is
+an
+experimental
+work
+in
+progress.
+The
+concepts
+described
+herein
+are
+intended
+to
+provide
+guidance
+for
+a
+possible
+future
+Working
+Group
+chartered
+to
+provide
+a
+Recommendation
+for
+this
+transformation.
+As
+a
+consequence,
+implementers
+of
+this
+specification,
+either
+producers
+or
+consumers,
+should
+note
+that
+it
+may
+change
+prior
+to
+any
+possible
+publication
+as
+a
+Recommendation.
+</p>
+<p>
+This
+document
+was
+published
+by
+the
+<a href="http://www.w3.org/2001/sw/interest/">
+HTML
+Data
+Task
+Force,
+Semantic
+Web
+Interest
+Group
+</a>
+as
+<del class="diff-old">a
+First
+Public
+Working
+Draft.
+</del>
+<ins class="diff-chg">an
+Interest
+Group
+Note.
+</ins>
+If
+you
+wish
+to
+make
+comments
+regarding
+this
+document,
+please
+send
+them
+to
+<a href="mailto:public-html-data-tf@w3.org">
+public-html-data-tf@w3.org
+</a>
+(
+<a href="mailto:public-html-data-tf-request@w3.org?subject=subscribe">
+subscribe
+</a>,
+<a href="http://lists.w3.org/Archives/Public/public-html-data-tf/">
+archives
+</a>
+).
+All
+feedback
+is
+welcome.
+</p>
+<p>
+Publication
+as
+<del class="diff-old">a
+Working
+Draft
+</del>
+<ins class="diff-chg">an
+Interest
+Group
+Note
+</ins>
+does
+not
+imply
+endorsement
+by
+the
+<acronym title="World Wide Web Consortium">
+W3C
+</acronym>
+Membership.
+This
+is
+a
+draft
+document
+and
+may
+be
+updated,
+replaced
+or
+obsoleted
+by
+other
+documents
+at
+any
+time.
+It
+is
+inappropriate
+to
+cite
+this
+document
+as
+other
+than
+work
+in
+progress.
+</p>
+<p>
+The
+disclosure
+obligations
+of
+the
+Participants
+of
+this
+group
+are
+described
+in
+the
+<a href="http://www.w3.org/2006/07/swig-charter#Ipr">
+charter
+</a>.
+</p>
+</div>
+<div id="toc" class="section">
+<h2 class="introductory">
+Table
+of
+Contents
+</h2>
+<ul class="toc">
+<li class="tocline">
+<a href="#introduction" class="tocxref">
+<span class="secno">
+1.
+</span>
+Introduction
+</a>
+<ul class="toc">
+<li class="tocline">
+<a href="#background" class="tocxref">
+<span class="secno">
+1.1
+</span>
+Background
+</a>
+</li>
+<li class="tocline">
+<a href="#use-cases" class="tocxref">
+<span class="secno">
+1.2
+</span>
+Use
+Cases
+</a>
+</li>
+<li class="tocline">
+<a href="#issues" class="tocxref">
+<span class="secno">
+1.3
+</span>
+Issues
+</a>
+</li>
+</ul>
+</li>
+<li class="tocline">
+<a href="#attributes-and-syntax" class="tocxref">
+<span class="secno">
+2.
+</span>
+Attributes
+and
+Syntax
+</a>
+</li>
+<li class="tocline">
+<a href="#vocabulary-registry" class="tocxref">
+<span class="secno">
+3.
+</span>
+Vocabulary
+Registry
+</a>
+<ul class="toc">
+<li class="tocline">
+<a href="#property-uri-generation" class="tocxref">
+<span class="secno">
+3.1
+</span>
+Property
+URI
+Generation
+</a>
+</li>
+<li class="tocline">
+<a href="#value-ordering" class="tocxref">
+<span class="secno">
+3.2
+</span>
+Value
+Ordering
+</a>
+</li>
+<li class="tocline">
+<a href="#value-typing" class="tocxref">
+<span class="secno">
+3.3
+</span>
+Value
+Typing
+</a>
+</li>
+</ul>
+</li>
+<li class="tocline">
+<a href="#algorithm" class="tocxref">
+<span class="secno">
+4.
+</span>
+Algorithm
+</a>
+<ul class="toc">
+<li class="tocline">
+<a href="#algorithm-terms" class="tocxref">
+<span class="secno">
+4.1
+</span>
+Algorithm
+Terms
+</a>
+</li>
+<li class="tocline">
+<a href="#rdf-conversion-algorithm" class="tocxref">
+<span class="secno">
+4.2
+</span>
+RDF
+Conversion
+Algorithm
+</a>
+</li>
+<li class="tocline">
+<a href="#generate-the-triples" class="tocxref">
+<span class="secno">
+4.3
+</span>
+Generate
+the
+triples
+</a>
+</li>
+<li class="tocline">
+<a href="#generate-predicate-uri" class="tocxref">
+<span class="secno">
+4.4
+</span>
+Generate
+Predicate
+URI
+</a>
+</li>
+<li class="tocline">
+<a href="#generate-property-values" class="tocxref">
+<span class="secno">
+4.5
+</span>
+Generate
+Property
+Values
+</a>
+</li>
+<li class="tocline">
+<a href="#generate-collection" class="tocxref">
+<span class="secno">
+4.6
+</span>
+Generate
+RDF
+Collection
+</a>
+</li>
+</ul>
+</li>
+<li class="tocline">
+<a href="#conformance" class="tocxref">
+<span class="secno">
+<ins class="diff-new">5.
+</ins></span><ins class="diff-new">
+Conformance
+</ins></a></li><li class="tocline">
+<a href="#markup-examples" class="tocxref">
+<span class="secno">
+A.
+</span>
+Markup
+Examples
+</a>
+</li>
+<li class="tocline">
+<a href="#example-registry" class="tocxref">
+<span class="secno">
+B.
+</span>
+Example
+<span class="tref internalDFN formerLink tref internalDFN" title="registry">
+registry
+</span>
+</a>
+</li>
+<li class="tocline">
+<a href="#acknowledgements" class="tocxref">
+<span class="secno">
+<del class="diff-old">B.1
+</del>
+<ins class="diff-chg">C.
+</ins>
+</span>
+Acknowledgements
+</a>
+</li>
+<li class="tocline">
+<a href="#references" class="tocxref">
+<span class="secno">
+<del class="diff-old">C.
+</del>
+<ins class="diff-chg">D.
+</ins>
+</span>
+References
+</a>
+<ul class="toc">
+<li class="tocline">
+<a href="#normative-references" class="tocxref">
+<span class="secno">
+<del class="diff-old">C.1
+</del>
+<ins class="diff-chg">D.1
+</ins>
+</span>
+Normative
+references
+</a>
+</li>
+<li class="tocline">
+<a href="#informative-references" class="tocxref">
+<span class="secno">
+<del class="diff-old">C.2
+</del>
+<ins class="diff-chg">D.2
+</ins>
+</span>
+Informative
+references
+</a>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="informative section" id="introduction">
+<h2>
+<span class="secno">
+1.
+</span>
+Introduction
+</h2>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+This
+document
+describes
+a
+means
+of
+transforming
+HTML
+containing
+microdata
+into
+RDF.
+HTML
+Microdata
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]
+is
+an
+extension
+to
+HTML
+used
+to
+embed
+machine-readable
+data
+to
+HTML
+documents.
+This
+specification
+describes
+transformation
+directly
+to
+RDF
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-CONCEPTS">
+RDF-CONCEPTS
+</a>
+</cite>
+].
+</p>
+<div class="note">
+<p>
+There
+are
+a
+variety
+of
+ways
+in
+which
+a
+mapping
+from
+microdata
+to
+RDF
+might
+be
+configured
+to
+give
+a
+result
+that
+is
+closer
+to
+the
+required
+result
+for
+a
+particular
+vocabulary.
+This
+specification
+defines
+terms
+that
+can
+be
+used
+as
+hooks
+for
+vocabulary-specific
+behavior,
+which
+could
+be
+defined
+within
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+or
+on
+an
+implementation-defined
+basis.
+However,
+the
+HTML
+Data
+TF
+recommends
+the
+adoption
+of
+a
+single
+method
+of
+mapping
+in
+which
+every
+vocabulary
+is
+treated
+as
+if:
+</p>
+<ul>
+<li>
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+is
+set
+to
+<code>
+vocabulary
+</code>
+</li>
+<li>
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+is
+set
+to
+<code>
+unordered
+</code>
+</li>
+</ul>
+<p>
+For
+background
+on
+the
+trade-offs
+between
+these
+options,
+see
+<a href="http://www.w3.org/wiki/Mapping_Microdata_to_RDF">
+http://www.w3.org/wiki/Mapping_Microdata_to_RDF
+</a>.
+</p>
+</div>
+<div class="informative section" id="background">
+<h3>
+<span class="secno">
+1.1
+</span>
+Background
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+Microdata
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]
+is
+a
+way
+of
+embedding
+data
+in
+HTML
+documents
+using
+attributes.
+The
+HTML
+DOM
+is
+extended
+to
+provide
+an
+API
+for
+accessing
+microdata
+information,
+and
+the
+microdata
+specification
+defines
+how
+to
+generate
+a
+JSON
+representation
+from
+microdata
+markup.
+</p>
+<p>
+Mapping
+microdata
+to
+RDF
+enables
+consumers
+to
+merge
+data
+expressed
+in
+other
+RDF-based
+formats
+with
+microdata.
+It
+facilitates
+the
+use
+of
+RDF
+vocabularies
+within
+microdata,
+and
+enables
+microdata
+to
+be
+used
+with
+the
+full
+RDF
+toolchain.
+Some
+use
+cases
+for
+this
+mapping
+are
+described
+in
+<a href="#use-cases">
+Section
+1.2
+</a>
+below.
+</p>
+<p>
+Microdata's
+data
+model
+does
+not
+align
+neatly
+with
+RDF.
+</p>
+<ul>
+<li>
+Non-URL
+microdata
+properties
+are
+disambiguated
+based
+on
+microdata
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+;
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+with
+the
+type
+<code>
+http://example.org/Cat
+</code>
+can
+have
+both
+the
+property
+<code>
+color
+</code>
+and
+the
+property
+<code>
+http://example.org/color
+</code>,
+and
+these
+properties
+are
+semantically
+distinct
+under
+microdata.
+In
+RDF,
+all
+properties
+have
+IRIs.
+</li>
+<li>
+When
+an
+item
+has
+multiple
+properties
+with
+the
+same
+name,
+the
+values
+are
+always
+ordered;
+in
+RDF,
+property
+values
+are
+unordered
+unless
+they
+are
+explicitly
+listed
+in
+an
+<a class="tref internalDFN" title="rdf_collection" href="#dfn-rdf_collection">
+RDF
+Collection
+</a>.
+</li>
+<li>
+A
+value
+in
+microdata
+is
+always
+a
+simple
+string
+which
+is
+interpreted
+by
+the
+consuming
+application.
+In
+RDF,
+values
+can
+be
+tagged
+with
+a
+datatype
+or
+a
+language.
+According
+to
+the
+microdata
+specification,
+the
+HTML
+context
+of
+microdata
+markup
+should
+not
+change
+how
+microdata
+is
+interpreted,
+so
+although
+element
+names
+and
+HTML
+<code>
+@lang
+</code>
+attributes
+could
+be
+used
+to
+provide
+datatype
+and
+language
+information
+for
+RDF
+data,
+this
+would
+be
+contrary
+to
+the
+microdata
+specification.
+</li>
+</ul>
+<p>
+Thus,
+in
+some
+places
+the
+needs
+of
+RDF
+consumers
+violate
+requirements
+of
+the
+microdata
+specification.
+This
+specification
+highlights
+where
+such
+violations
+occur
+and
+the
+reasons
+for
+them.
+</p>
+<p>
+This
+specification
+allows
+for
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>
+-specific
+rules
+that
+affect
+the
+generation
+of
+property
+URIs
+and
+value
+serializations.
+This
+is
+facilitated
+by
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+that
+associates
+URIs
+with
+specific
+rules
+based
+on
+matching
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+values
+against
+registered
+URI
+prefixes
+do
+determine
+a
+vocabulary
+and
+potentially
+vocabulary-specific
+processing
+rules.
+</p>
+<p>
+This
+specification
+also
+assumes
+that
+consumers
+of
+RDF
+generated
+from
+microdata
+may
+have
+to
+process
+the
+results
+in
+order
+to,
+for
+example,
+assign
+appropriate
+datatypes
+to
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+s.
+</p>
+</div>
+<div class="informative section" id="use-cases">
+<h3>
+<span class="secno">
+1.2
+</span>
+Use
+Cases
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+During
+the
+period
+of
+the
+task
+force,
+a
+number
+of
+use
+cases
+were
+put
+forth
+for
+the
+use
+of
+microdata
+in
+generating
+RDF:
+</p>
+<ul>
+<li>
+Semantic
+search
+engines
+such
+as
+<a href="http://sindice.com/">
+Sindice
+</a>
+use
+RDF
+as
+their
+backend
+data
+model.
+They
+want
+to
+gather
+information
+expressed
+using
+microdata
+alongside
+information
+expressed
+in
+RDF-based
+formats
+and
+make
+it
+available
+to
+others
+to
+use,
+as
+a
+service.
+In
+these
+cases,
+the
+ultimate
+consumer,
+who
+will
+need
+to
+understand
+the
+vocabularies
+used
+within
+the
+microdata,
+is
+the
+program
+or
+person
+who
+pulls
+out
+data
+from
+Sindice.
+Sindice
+needs
+to
+retain
+the
+distinctions
+in
+the
+original
+microdata
+(e.g.
+ordering
+of
+items)
+and
+might
+not
+have
+built-in
+knowledge
+about
+the
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>
+of
+interest
+to
+the
+ultimate
+consumer.
+In
+this
+case,
+the
+ultimate
+consumer
+is
+likely
+to
+have
+to
+map/validate/handle
+errors
+in
+the
+data
+they
+get
+from
+Sindice.
+</li>
+<li>
+A
+consumer
+such
+as
+<a href="http://openelectiondata.org">
+openelectiondata.org
+</a>
+wants
+to
+support
+microdata-based
+markup
+of
+their
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>
+as
+well
+as
+RDFa-based
+markup,
+both
+going
+into
+an
+RDF-based
+data
+store.
+They
+want
+to
+use
+an
+off-the-shelf
+tool
+to
+extract
+the
+microdata.
+They
+want
+to
+configure
+the
+tool
+to
+give
+them
+the
+RDF
+that
+is
+appropriate
+for
+their
+known
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>.
+</li>
+<li>
+A
+browser
+plugin
+that
+captures
+data
+for
+the
+user
+uses
+an
+RDF
+model
+as
+its
+backend
+store.
+Any
+time
+it
+encounters
+microdata
+on
+a
+page,
+it
+wants
+to
+pull
+that
+microdata
+into
+the
+store
+on
+the
+fly.
+</li>
+<li>
+<a href="http://purl.org/goodrelations/">
+GoodRelations
+</a>
+properties
+do
+not
+take
+<a class="tref internalDFN" title="rdf_collection" href="#dfn-rdf_collection">
+rdf:List
+</a>
+values;
+when
+they
+take
+multiple
+values
+they
+are
+unordered.
+The
+<code>
+rdfs:range
+</code>
+of
+a
+GoodRelations
+property
+indicates
+the
+datatype
+of
+the
+expected
+value,
+and
+GoodRelations
+processors
+will
+expect
+values
+to
+be
+cast
+to
+that
+type.
+Language
+information
+from
+the
+HTML
+needs
+to
+be
+captured
+as
+it
+is
+common
+that
+multiple
+values
+will
+be
+used
+to
+specify
+the
+same
+information
+in
+different
+languages.
+</li>
+<li>
+<a href="http://schema.org/">
+Schema.org
+</a>
+has
+an
+<a href="http://schema.org/docs/extension.html">
+extension
+mechanism
+</a>
+to
+allow
+authors
+to
+express
+information
+that
+is
+more
+detail
+than
+the
+pre-defined
+types,
+properties
+and
+enumerations.
+Property
+URIs
+are
+all
+in
+the
+same
+flat-namespace
+as
+types,
+but
+authors
+can
+add
+more
+detail
+by
+using
+a
+'/'
+after
+the
+type
+or
+property
+to
+provide
+more
+detail.
+For
+example,
+schema.org
+defines
+a
+<em>
+musicGroupMember
+</em>
+property
+having
+a
+URI
+of
+<code>
+http://schema.org/musicGroupMember
+</code>,
+and
+an
+author
+might
+express
+more
+detail
+through
+an
+ad-hoc
+sub-property
+<em>
+musicGroupMember/leadVocalist
+</em>,
+having
+the
+URI
+<code>
+http://schema.org/musicGroupMember/leadVocalist
+</code>.
+</li>
+</ul>
+</div>
+<div class="informative section" id="issues">
+<h3>
+<span class="secno">
+1.3
+</span>
+Issues
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+Decisions
+or
+open
+issues
+in
+the
+specification
+are
+tracked
+on
+the
+<a href="http://www.w3.org/2011/htmldata/track/issues">
+Task
+Force
+Issue
+Tracker
+</a>.
+These
+include
+the
+following:
+</p>
+<dl>
+<dt>
+<a href="http://www.w3.org/2011/htmldata/track/issues/1">
+ISSUE
+1
+</a>
+</dt>
+<dd>
+Vocabulary
+specific
+parsing
+for
+Microdata.
+This
+specification
+attempts
+to
+create
+generic
+rules
+for
+processing
+microdata
+with
+typical
+RDF
+vocabularies.
+A
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+allows
+for
+exceptions
+to
+the
+default
+processing
+rules
+for
+certain
+well-known
+vocabularies.
+</dd>
+<dt>
+<a href="http://www.w3.org/2011/htmldata/track/issues/2">
+ISSUE
+2
+</a>
+</dt>
+<dd>
+Should
+Microdata-RDF
+generate
+XMLLiteral
+values.
+This
+issue
+has
+been
+closed
+with
+no
+change
+as
+this
+would
+violate
+microdata's
+data
+model.
+</dd>
+<dt>
+<a href="http://www.w3.org/2011/htmldata/track/issues/3">
+ISSUE
+3
+</a>
+</dt>
+<dd>
+Should
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+allow
+property
+datatype
+specification.
+The
+consensus
+is
+that
+datatypes
+are
+only
+derived
+from
+HTML
+semantics,
+so
+that
+only
+<time>
+values
+have
+a
+datatype
+other
+than
+plain.
+</dd>
+<dt>
+<a href="http://www.w3.org/2011/htmldata/track/issues/4">
+ISSUE
+4
+</a>
+</dt>
+<dd>
+Should
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+allow
+a
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+or
+URL
+to
+be
+used
+as
+an
+alias
+for
+<a class="aref internalDFN" title="itemid" href="#dfn-itemid">
+@itemid
+</a>.
+</dd>
+</dl>
+<p>
+The
+purpose
+of
+this
+specification
+is
+to
+provide
+input
+to
+a
+future
+working
+group
+that
+can
+make
+decisions
+about
+the
+need
+for
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+and
+the
+details
+of
+processing.
+Among
+the
+options
+investigated
+by
+the
+Task
+Force
+are
+the
+following:
+</p>
+<ul>
+<li>
+Property
+URI
+generation
+using
+the
+original
+microdata
+specification
+with
+a
+base
+URI
+and
+<cite>
+<a href="http://tools.ietf.org/html/rfc3986#section-3.5">
+fragment
+</a>
+</cite>
+made
+up
+of
+the
+in-scope
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+and
+<a class="tref internalDFN" title="properties" href="#dfn-properties">
+properties
+</a>.
+</li>
+<li>
+Vocabulary-based
+URI
+generation,
+where
+the
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>
+is
+determined
+from
+the
+in-scope
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>,
+either
+through
+an
+algorithmic
+modification
+of
+the
+type
+URL
+or
+by
+matching
+the
+URL
+against
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>.
+The
+vocabulary
+URI
+is
+then
+used
+to
+generate
+property
+URIs
+in
+a
+namespace
+parallel
+to
+the
+type
+URI.
+</li>
+<li>
+When
+there
+are
+multiple
+<a class="tref internalDFN" title="top-level_item" href="#dfn-top-level_item">
+top-level
+item
+</a>
+s
+in
+a
+document,
+place
+items
+in
+an
+RDF
+Collection.
+Alternatively,
+simply
+list
+the
+items
+as
+multiple
+values,
+or
+do
+not
+generate
+an
+<code>
+http://www.w3.org/ns/md#item
+</code>
+mapping
+at
+all.
+</li>
+<li>
+When
+an
+item
+has
+multiple
+values
+for
+a
+given
+<a class="tref internalDFN" title="property" href="#dfn-property">
+property
+</a>,
+place
+the
+values
+in
+an
+RDF
+Collection.
+Alternatively,
+do
+not
+use
+collections,
+use
+an
+alternative
+such
+as
+<code>
+rdf:Seq
+</code>,
+or
+place
+all
+values,
+whether
+or
+not
+multiple,
+into
+some
+form
+of
+collection.
+</li>
+</ul>
+<p>
+<ins class="diff-new">More
+examples
+and
+explanatory
+information
+are
+available
+in
+[
+</ins><cite><a class="bibref" rel="biblioentry" href="#bib-MICRODATA-RDF-SUPPLEMENT"><ins class="diff-new">
+MICRODATA-RDF-SUPPLEMENT
+</ins></a></cite><ins class="diff-new">
+],
+which
+may
+be
+updated
+from
+time
+to
+time.
+</ins></p>
+</div>
+</div>
+<div id="attributes-and-syntax" class="section">
+<h2>
+<span class="secno">
+2.
+</span>
+Attributes
+and
+Syntax
+</h2>
+<p>
+The
+microdata
+specification
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]
+defines
+a
+number
+of
+attributes
+and
+the
+way
+in
+which
+those
+attributes
+are
+to
+be
+interpreted.
+The
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+microdata
+DOM
+API
+</a>
+</cite>
+provides
+methods
+and
+attributes
+for
+retrieving
+microdata
+from
+the
+HTML
+DOM.
+</p>
+<p>
+For
+reference,
+attributes
+used
+for
+specifying
+and
+retrieving
+HTML
+microdata
+are
+referenced
+here:
+</p>
+<dl>
+<dt>
+<dfn class="adef" title="itemid" id="dfn-itemid">
+itemid
+</dfn>
+</dt>
+<dd>
+An
+attribute
+containing
+a
+URL
+used
+to
+identify
+the
+subject
+of
+triples
+associated
+with
+this
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#attr-itemid">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn class="adef" title="itemprop" id="dfn-itemprop">
+itemprop
+</dfn>
+</dt>
+<dd>
+An
+attribute
+used
+to
+identify
+one
+or
+more
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+s
+of
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+s.
+An
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+contains
+a
+space
+separated
+list
+of
+<dfn title="name" id="dfn-name">
+name
+</dfn>
+s
+which
+may
+either
+by
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+s
+or
+terms
+associated
+with
+the
+type
+of
+the
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+as
+defined
+by
+the
+referencing
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+'s
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#names:-the-itemprop-attribute">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn class="adef" title="itemref" id="dfn-itemref">
+itemref
+</dfn>
+</dt>
+<dd>
+An
+additional
+attribute
+on
+an
+element
+that
+references
+additional
+elements
+containing
+property
+definitions
+to
+be
+applied
+to
+the
+referencing
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#attr-itemref">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn class="adef" title="itemscope" id="dfn-itemscope">
+itemscope
+</dfn>
+</dt>
+<dd>
+An
+boolean
+attribute
+identifying
+an
+element
+as
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#attr-itemscope">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn class="adef" title="itemtype" id="dfn-itemtype">
+itemtype
+</dfn>
+</dt>
+<dd>
+An
+additional
+attribute
+on
+an
+element
+used
+to
+specify
+one
+or
+more
+types
+of
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+The
+<dfn title="item_type" id="dfn-item_type">
+item
+type
+</dfn>
+of
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+is
+the
+first
+value
+returned
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemtype">
+element.itemType
+</a>
+</cite>
+</code>
+on
+the
+element.
+The
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+is
+also
+used
+to
+resolve
+non-URL
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+s
+to
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+s.
+Available
+through
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+Microdata
+DOM
+API
+</a>
+</cite>
+as
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemtype">
+element.itemType
+</a>
+</cite>
+</code>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#attr-itemtype">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+</dl>
+<p>
+In
+RDF,
+it
+is
+common
+for
+people
+to
+shorten
+vocabulary
+terms
+via
+abbreviated
+URIs
+that
+use
+a
+'prefix'
+and
+a
+'reference'.
+throughout
+this
+document
+assume
+that
+the
+following
+vocabulary
+prefixes
+have
+been
+defined:
+</p>
+<table>
+<tbody>
+<tr>
+<td>
+dc:
+</td>
+<td>
+http://purl.org/dc/terms/
+</td>
+</tr>
+<tr>
+<td>
+md:
+</td>
+<td>
+http://www.w3.org/ns/md#
+</td>
+</tr>
+<tr>
+<td>
+rdf:
+</td>
+<td>
+http://www.w3.org/1999/02/22-rdf-syntax-ns#
+</td>
+</tr>
+<tr>
+<td>
+rdfs:
+</td>
+<td>
+http://www.w3.org/2000/01/rdf-schema#
+</td>
+</tr>
+<tr>
+<td>
+xsd:
+</td>
+<td>
+http://www.w3.org/2001/XMLSchema#
+</td>
+</tr>
+</tbody>
+</table>
+</div>
+<div class="informative section" id="vocabulary-registry">
+<h2>
+<span class="secno">
+3.
+</span>
+Vocabulary
+Registry
+</h2>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+In
+a
+perfect
+world,
+all
+processors
+would
+be
+able
+to
+generate
+the
+same
+output
+for
+a
+given
+input
+without
+regards
+to
+the
+requirements
+of
+a
+particular
+<a class="tref internalDFN" title="vocabulary" href="#dfn-vocabulary">
+vocabulary
+</a>.
+However,
+microdata
+doesn't
+provide
+sufficient
+syntactic
+help
+in
+making
+these
+decisions.
+Different
+vocabularies
+have
+different
+needs.
+</p>
+<p>
+The
+registry
+is
+located
+at
+the
+namespace
+defined
+for
+microdata:
+<code>
+http://www.w3.org/ns/md
+</code>
+in
+a
+variety
+of
+formats.
+</p>
+<p>
+The
+<dfn title="registry" id="dfn-registry">
+registry
+</dfn>
+associates
+a
+<dfn title="uri_prefix" id="dfn-uri_prefix">
+URI
+prefix
+</dfn>
+with
+one
+or
+more
+key-value
+pairs
+denoting
+processor
+behavior.
+A
+hypothetical
+JSON
+representation
+of
+such
+a
+registry
+might
+be
+the
+following:
+</p>
+<del class="diff-old">{
+ "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "tracks": {"multipleValues": "list"}
+ }
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "list",
+ "properties" {
+ "url": {"multipleValues": "unordered"}
+ }
+ }
+</del>
+<pre class="example">{
+<ins class="diff-chg"> "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "tracks": {"multipleValues": "list"}
+ }
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "list",
+ "properties" {
+ "url": {"multipleValues": "unordered"}
+ }
+ }
+</ins>
+}
+</pre>
+<p>
+This
+structure
+associates
+mappings
+for
+two
+URIs,
+<code>
+http://schema.org/
+</code>
+and
+<code>
+http://microformats.org/profile/hcard
+</code>.
+Items
+having
+an
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+with
+a
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+from
+this
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+use
+the
+the
+rules
+described
+for
+that
+prefix
+within
+the
+scope
+of
+that
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>.
+This
+mapping
+currently
+defines
+two
+rules:
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+and
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+with
+values
+to
+indicate
+specific
+behavior.
+It
+also
+allows
+overrides
+on
+a
+per-property
+basis;
+the
+<a class="tref internalDFN" title="properties" href="#dfn-properties">
+<code>
+properties
+</code>
+</a>
+key
+associates
+an
+individual
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+with
+overrides
+for
+default
+behavior.
+The
+interpretation
+of
+these
+rules
+is
+defined
+in
+the
+following
+sections.
+If
+an
+item
+has
+no
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>
+or
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+no
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+matching
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>,
+a
+conforming
+processor
+<em class="rfc2119" title="must">
+must
+</em>
+use
+the
+default
+values
+defined
+for
+these
+rules.
+</p>
+<p class="note">
+The
+concept
+of
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>,
+including
+a
+hypothetical
+format,
+location
+and
+updating
+rules
+is
+presented
+as
+an
+abstract
+concept
+useful
+for
+describing
+the
+function
+of
+a
+microdata
+processor.
+There
+are
+issues
+surrounding
+update
+frequency,
+URL
+naming,
+and
+how
+updates
+are
+authorized.
+This
+spec
+just
+considers
+the
+semantic
+content
+of
+such
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+and
+how
+it
+can
+be
+used
+to
+affect
+processing
+without
+defining
+its
+representation
+or
+update
+policies.
+</p>
+<p class="issue">
+Richard
+Ciganiak
+has
+<cite>
+<a href="http://richard.cyganiak.de/2011/10/microdata.html#whitelists">
+pointed
+out
+</a>
+</cite>
+that
+<del class="diff-old">"Registry"
+</del>
+<ins class="diff-chg">"Registry"
+</ins>
+may
+be
+the
+wrong
+term,
+as
+the
+proposed
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+doesn't
+assign
+identifiers
+or
+manage
+namespace,
+it
+simply
+provides
+a
+mapping
+between
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+ss
+and
+processor
+behavior
+and
+suggests
+the
+term
+<del class="diff-old">"Whitelist".
+</del>
+<ins class="diff-chg">"Whitelist".
+</ins>
+As
+more
+than
+two
+values
+are
+required,
+and
+it
+describes
+more
+than
+binary
+behavior,
+this
+term
+isn't
+appropriate
+either.
+</p>
+<div class="informative section" id="property-uri-generation">
+<h3>
+<span class="secno">
+3.1
+</span>
+Property
+URI
+Generation
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+For
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+s
+which
+are
+not
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+s,
+the
+<dfn title="propertyuri" id="dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</dfn>
+rule
+defines
+the
+algorithm
+for
+generating
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+given
+an
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+evaluation
+context
+</a>
+including
+a
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>,
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+name
+</a>
+and
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>.
+</p>
+<p>
+The
+procedure
+for
+generating
+property
+URIs
+is
+defined
+in
+<a href="#generate-predicate-uri">
+Generate
+Predicate
+URI
+</a>.
+</p>
+<p>
+Possible
+values
+for
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+are
+the
+following:
+</p>
+<dl>
+<dt>
+<code>
+contextual
+</code>
+</dt>
+<dd>
+The
+<code>
+contextual
+</code>
+URI
+generation
+scheme
+guarantees
+that
+generated
+property
+URIs
+are
+unique
+based
+on
+the
+value
+of
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+name
+</a>.
+This
+is
+required
+as
+the
+microdata
+data
+model
+requires
+that
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+s
+are
+associated
+with
+specific
+items
+and
+do
+not
+have
+a
+global
+scope.
+(See
+<a href="#scheme-context">
+Step
+5
+</a>
+in
+<a href="#generate-predicate-uri">
+Generate
+Predicate
+URI
+</a>
+).
+<div>
+<p>
+URI
+creation
+uses
+a
+base
+URI
+with
+query
+parameters
+to
+indicate
+the
+in-scope
+type
+and
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+list.
+Consider
+the
+following
+example:
+</p>
+<del class="diff-old"> <span itemscope itemtype="http://microformats.org/profile/hcard">
+ <span itemprop="n" itemscope>
+ <span itemprop="given-name">
+ Princeton
+ </span>
+ </span>
+</del>
+ <pre class="example"><span itemscope itemtype="http://microformats.org/profile/hcard">
+<ins class="diff-chg"> <span itemprop="n" itemscope>
+ <span itemprop="given-name">
+ Princeton
+ </span>
+ </span>
+</ins>
+</span>
+</pre>
+<p>
+The
+first
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+<em>
+n
+</em>
+generates
+the
+URI
+<code>
+http://www.w3.org/ns/md?type=http://microformats.org/profile/hcard?prop=n
+</code>.
+However,
+the
+included
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+<em>
+given-name
+</em>
+is
+included
+in
+untyped
+item.
+The
+inherited
+property
+URI
+is
+used
+to
+create
+a
+new
+property
+URI:
+<code>
+http://www.w3.org/ns/md?type=http://microformats.org/profile/hcard?prop=n.given-name
+</code>.
+</p>
+<p>
+This
+scheme
+is
+compatible
+with
+the
+needs
+of
+other
+RDF
+serialization
+formats
+such
+as
+RDF/XML
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SYNTAX-GRAMMAR">
+RDF-SYNTAX-GRAMMAR
+</a>
+</cite>
+],
+which
+rely
+on
+<em>
+QNames
+</em>
+for
+expressing
+properties.
+For
+example,
+the
+generated
+property
+URIs
+can
+be
+split
+as
+follows:
+<del class="diff-old"> <rdf:Description xmlns:hcard="http://www.w3.org/ns/md?type=http://microformats.org/profile/hcard?prop="
+ rdf:type="http://microformats.org/profile/hcard">
+ <hcard:n>
+ <rdf:Description>
+ <hcard:n.given-name>
+ Princeton
+ </hcard:n.given-name>
+ </rdf:Description>
+ </hcard:n>
+</del>
+</p>
+ <pre class="example"><rdf:Description xmlns:hcard="http://www.w3.org/ns/md?type=http://microformats.org/profile/hcard?prop="
+<ins class="diff-chg"> rdf:type="http://microformats.org/profile/hcard">
+ <hcard:n>
+ <rdf:Description>
+ <hcard:n.given-name>
+ Princeton
+ </hcard:n.given-name>
+ </rdf:Description>
+ </hcard:n>
+</ins>
+</rdf:Description>
+</pre>
+<p>
+Looking
+at
+another
+example:
+</p>
+<del class="diff-old"> <div itemscope itemtype="http://schema.org/Person">
+ <h2 itemprop="name">Jeni</h2>
+</del>
+ <pre class="example"><div itemscope itemtype="http://schema.org/Person">
+<ins class="diff-chg"> <h2 itemprop="name">Jeni</h2>
+</ins>
+</div>
+</pre>
+<p>
+This
+would
+generate
+<code>
+http://www.w3.org/ns/md?type=http://schema.org/Person&prop=name
+</code>.
+</p>
+</div>
+</dd>
+<dt>
+<code>
+vocabulary
+</code>
+</dt>
+<dd>
+The
+<code>
+vocabulary
+</code>
+URI
+generation
+scheme
+appends
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+s
+that
+are
+not
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+s
+to
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>.
+When
+generating
+property
+URIs,
+if
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+does
+not
+end
+with
+a
+'/'
+or
+'#',
+a
+'#'
+is
+appended
+to
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>.
+(See
+<a href="#scheme-vocab">
+Step
+4
+</a>
+in
+<a href="#generate-predicate-uri">
+Generate
+Predicate
+URI
+</a>.)
+<div>
+<p>
+URI
+creation
+uses
+a
+base
+URL
+with
+query
+parameters
+to
+indicate
+the
+in-scope
+type
+and
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+list.
+Consider
+the
+following
+example:
+</p>
+<del class="diff-old"> <span itemscope itemtype="http://microformats.org/profile/hcard">
+ <span itemprop="n" itemscope>
+ <span itemprop="given-name">
+ Princeton
+ </span>
+ </span>
+</del>
+ <pre class="example"><span itemscope itemtype="http://microformats.org/profile/hcard">
+<ins class="diff-chg"> <span itemprop="n" itemscope>
+ <span itemprop="given-name">
+ Princeton
+ </span>
+ </span>
+</ins>
+</span>
+</pre>
+<p>
+Given
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+<code>
+http://microformats.org/profile/hcard
+</code>,
+this
+would
+generate
+<code>
+http://microformats.org/profile/hcard#n
+</code>
+and
+<code>
+http://microformats.org/profile/hcard#given-name
+</code>.
+Note
+that
+the
+'#'
+is
+automatically
+added
+as
+a
+separator.
+</p>
+<p>
+Looking
+at
+another
+example:
+</p>
+<del class="diff-old"> <div itemscope itemtype="http://schema.org/Person">
+ <h2 itemprop="name">Jeni</h2>
+</del>
+ <pre class="example"><div itemscope itemtype="http://schema.org/Person">
+<ins class="diff-chg"> <h2 itemprop="name">Jeni</h2>
+</ins>
+</div>
+</pre>
+<p>
+Given
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+<code>
+http://schema.org/
+</code>,
+this
+would
+generate
+<code>
+http://schema.org/name
+</code>.
+Note
+that
+if
+the
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+were
+<code>
+http://schema.org/Person/Teacher
+</code>,
+this
+would
+generate
+the
+same
+property
+URI.
+</p>
+</div>
+</dd>
+</dl>
+<p>
+If
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+no
+match
+for
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>
+implementations
+act
+as
+if
+there
+is
+a
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+made
+from
+the
+first
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+value
+by
+stripping
+either
+the
+<cite>
+<a href="http://tools.ietf.org/html/rfc3986#section-3.5">
+fragment
+</a>
+</cite>
+content
+or
+<cite>
+<a href="http://tools.ietf.org/html/rfc3986#section-3.3">
+last
+path
+segment
+</a>
+</cite>,
+if
+the
+value
+has
+no
+fragment
+(See
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RFC3986">
+RFC3986
+</a>
+</cite>
+]).
+</p>
+<p class="note">
+Deconstructing
+the
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+URL
+to
+create
+or
+identify
+a
+vocabulary
+URI
+is
+a
+violation
+of
+the
+microdata
+specification
+which
+is
+necessary
+to
+support
+the
+use
+of
+existing
+vocabularies
+designed
+for
+use
+with
+RDF,
+and
+shared
+or
+inherited
+properties
+within
+all
+vocabularies.
+</p>
+<p>
+The
+default
+value
+of
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+is
+<code>
+vocabulary
+</code>.
+</p>
+<del class="diff-old"> <div itemscope itemtype="http://schema.org/Book">
+ <h2 itemprop="title">Just a Geek</h2>
+</del>
+ <pre class="example"><div itemscope itemtype="http://schema.org/Book">
+<ins class="diff-chg"> <h2 itemprop="title">Just a Geek</h2>
+</ins>
+</div>
+</pre>
+<p>
+In
+this
+example,
+assuming
+no
+matching
+entry
+in
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>,
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+is
+constructed
+by
+removing
+the
+<cite>
+<a href="http://tools.ietf.org/html/rfc3986#section-3.3">
+last
+path
+segment
+</a>
+</cite>,
+leaving
+the
+URI
+<code>
+http://schema.org/
+</code>.
+As
+there
+is
+no
+explicit
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>,
+the
+default
+<code>
+vocabulary
+</code>
+is
+used,
+and
+the
+resulting
+property
+URI
+would
+be
+<code>
+http://schema.org/title
+</code>.
+</p>
+</div>
+<div class="informative section" id="value-ordering">
+<h3>
+<span class="secno">
+3.2
+</span>
+Value
+Ordering
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+For
+items
+having
+multiple
+values
+for
+a
+given
+<a class="tref internalDFN" title="property" href="#dfn-property">
+property
+</a>,
+the
+<dfn title="multiplevalues" id="dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</dfn>
+rule
+defines
+the
+algorithm
+for
+serializing
+these
+values.
+Microdata
+uses
+document
+order
+when
+generating
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+s,
+as
+defined
+in
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+Microdata
+DOM
+API
+</a>
+</cite>
+as
+<code>
+element.itemValue
+</code>.
+However,
+many
+RDF
+vocabularies
+expect
+multiple
+values
+to
+be
+generated
+as
+triples
+sharing
+a
+common
+subject
+and
+predicate.
+In
+some
+cases,
+it
+may
+be
+useful
+to
+retain
+value
+ordering.
+</p>
+<p>
+The
+procedure
+for
+generating
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+s
+is
+defined
+in
+<a href="#generate-property-values">
+Generate
+Property
+Values
+</a>.
+</p>
+<p>
+Possible
+values
+for
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+are
+the
+following:
+</p>
+<dl>
+<dt>
+<code>
+unordered
+</code>
+</dt>
+<dd>
+Values
+are
+serialized
+without
+ordering
+using
+a
+common
+subject
+and
+predicate.
+(See
+<a href="#values-unordered">
+Step
+7
+</a>
+in
+<a href="#generate-property-values">
+Generate
+Property
+Values
+</a>
+).
+</dd>
+<dt>
+<code>
+list
+</code>
+</dt>
+<dd>
+Multi-valued
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+s
+are
+serialized
+using
+an
+<a class="tref internalDFN" title="rdf_collection" href="#dfn-rdf_collection">
+RDF
+Collection
+</a>.
+(See
+<a href="#values-list">
+Step
+8
+</a>
+in
+<a href="#generate-property-values">
+Generate
+Property
+Values
+</a>
+).
+</dd>
+</dl>
+<p>
+An
+example
+of
+how
+this
+might
+be
+specified
+in
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+is
+the
+following:
+</p>
+<del class="diff-old"> {
+ "http://schema.org/": {
+ "propertyURI": "vocabulary",
+
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "type",
+
+ }
+</del>
+ <pre class="example">{
+<ins class="diff-chg"> "http://schema.org/": {
+ "propertyURI": "vocabulary",
+</ins> <span class="diff">"multipleValues": "unordered"</span>
+<ins class="diff-chg">
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "vocabulary",
+</ins> <span class="diff">"multipleValues": {"multipleValues": "list"}</span>
+<ins class="diff-chg">
+ }
+</ins>
+}
+</pre>
+<p>
+Additionally,
+some
+vocabularies
+may
+wish
+to
+specify
+this
+on
+a
+per-property
+basis.
+For
+example,
+within
+<code>
+http://schema.org/MusicPlaylist
+</code>
+the
+<code>
+tracks
+</code>
+property
+might
+depend
+on
+the
+order
+of
+values
+to
+to
+reproduce
+associated
+<code>
+MusicRecording
+</code>
+values.
+</p>
+<del class="diff-old"> {
+ "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "tracks": {"multipleValues": "list"}
+ }
+ }
+</del>
+ <pre class="example">{
+<ins class="diff-chg"> "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered"<span class="diff">,
+ "properties": {
+ "tracks": {"multipleValues": "list"}
+ }</span>
+ }
+</ins>
+}
+</pre>
+<p>
+The
+<dfn title="properties" id="dfn-properties">
+<code>
+properties
+</code>
+</dfn>
+key
+takes
+a
+JSON
+Object
+as
+a
+value,
+which
+in
+turn
+has
+keys
+for
+each
+property
+that
+is
+to
+be
+given
+alternate
+semantics.
+Each
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+is
+implicitly
+expanded
+to
+it's
+URI
+representation
+as
+defined
+in
+<a href="#generate-predicate-uri">
+Generate
+Predicate
+URI
+</a>,
+so
+that
+the
+behavior
+is
+the
+same
+whether
+or
+not
+the
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+is
+listed
+as
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>.
+</p>
+<p>
+The
+default
+value
+of
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+is
+<code>
+unordered
+</code>.
+</p>
+<div class="note">
+<p>
+An
+alternative
+mechanism
+would
+output
+<em>
+both
+</em>
+unordered
+and
+ordered
+values,
+to
+allow
+an
+application
+to
+choose
+the
+most
+useful
+representation.
+For
+example,
+consider
+the
+following:
+</p>
+<del class="diff-old"><div itemscope="" itemtype="http://schema.org/MusicPlaylist">
+ <span itemprop="name">Classic Rock Playlist</span>
+ <meta itemprop="numTracks" content="2"/>
+ <p>Including works by
+ <span itemprop="byArtist">Lynard Skynard</span> and
+ <span itemprop="byArtist">AC/DC</span></p>.
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 1.<span itemprop="name">Sweet Home Alabama</span> -
+ <span itemprop="byArtist">Lynard Skynard</span>
+ <link href="sweet-home-alabama" itemprop="url" />
+ </div>
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 2.<span itemprop="name">Shook you all Night Long</span> -
+ <span itemprop="byArtist">AC/DC</span>
+ <link href="shook-you-all-night-long" itemprop="url" />
+ </div>
+</del>
+<pre class="example"><div itemscope="" itemtype="http://schema.org/MusicPlaylist">
+<ins class="diff-chg"> <span itemprop="name">Classic Rock Playlist</span>
+ <meta itemprop="numTracks" content="2"/>
+ <p>Including works by
+ <span itemprop="byArtist">Lynard Skynard</span> and
+ <span itemprop="byArtist">AC/DC</span></p>.
+
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 1.<span itemprop="name">Sweet Home Alabama</span> -
+ <span itemprop="byArtist">Lynard Skynard</span>
+ <link href="sweet-home-alabama" itemprop="url" />
+ </div>
+
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 2.<span itemprop="name">Shook you all Night Long</span> -
+ <span itemprop="byArtist">AC/DC</span>
+ <link href="shook-you-all-night-long" itemprop="url" />
+ </div>
+</ins>
+</div>
+</pre>
+<p>
+This
+might
+generate
+the
+following
+Turtle:
+</p>
+<del class="diff-old">@prefix md: <http://www.w3.org/ns/md#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix schema: <http://schema.org/> .
+<> md:item [ a schema:MusicPlaylist;
+ schema:name "Classic Rock Playlist";
+ schema:byArtist ("Lynard Skynard" "AC/DC");
+ schema:numTracks "2";
+ schema:tracks _:track1, _:track2, (_:track1 _:track2)
+] .
+_:track1 a schema:MusicRecording;
+ schema:byArtist ("Lynard Skynard");
+ schema:name "Sweet Home Alabama";
+ schema:url <sweet-home-alabama> .
+_:track2 a schema:MusicRecording;
+ schema:byArtist ("AC/DC");
+ schema:name "Shook you all Night Long";
+</del>
+<pre class="example">@prefix md: <http://www.w3.org/ns/md#> .
+<ins class="diff-chg">@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix schema: <http://schema.org/> .
+
+<> md:item [ a schema:MusicPlaylist;
+ schema:name "Classic Rock Playlist";
+ schema:byArtist ("Lynard Skynard" "AC/DC");
+ schema:numTracks "2";
+ schema:tracks _:track1, _:track2, (_:track1 _:track2)
+] .
+_:track1 a schema:MusicRecording;
+ schema:byArtist ("Lynard Skynard");
+ schema:name "Sweet Home Alabama";
+ schema:url <sweet-home-alabama> .
+_:track2 a schema:MusicRecording;
+ schema:byArtist ("AC/DC");
+ schema:name "Shook you all Night Long";
+</ins>
+schema:url
+<shook-you-all-night-long>
+.
+</pre>
+<p>
+By
+providing
+both
+<code>
+_:track1
+</code>
+and
+<code>
+_:track2
+</code>
+as
+object
+values
+of
+the
+playlist
+along
+with
+an
+RDF
+Collection
+containing
+the
+ordered
+values,
+the
+data
+may
+be
+queried
+via
+a
+simple
+query
+using
+the
+playlist
+subject,
+or
+as
+an
+ordered
+collection.
+</p>
+</div>
+</div>
+<div class="informative section" id="value-typing">
+<h3>
+<span class="secno">
+3.3
+</span>
+Value
+Typing
+</h3>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+In
+microdata,
+all
+values
+are
+strings.
+In
+RDF,
+values
+may
+be
+resources
+or
+may
+be
+typed
+with
+an
+appropriate
+datatype.
+</p>
+<p>
+In
+some
+cases,
+the
+type
+of
+a
+microdata
+value
+can
+be
+determined
+from
+the
+element
+on
+which
+it
+is
+specified.
+In
+particular:
+</p>
+<ul>
+<li>
+URL
+property
+elements
+provide
+URLs
+</li>
+<li>
+<code>
+time
+</code>
+element
+provides
+dates
+and
+times
+</li>
+</ul>
+<p class="issue">
+Using
+information
+about
+the
+content
+of
+the
+document
+where
+the
+microdata
+is
+marked
+up
+<em>
+might
+</em>
+be
+a
+violation
+of
+the
+spirit
+of
+the
+microdata
+specification,
+though
+it
+does
+not
+explicitly
+say
+in
+normative
+text
+that
+consumers
+cannot
+use
+other
+information
+from
+the
+HTML
+DOM
+to
+interpret
+microdata.
+</p>
+<p>
+Additionally,
+one
+possible
+use
+of
+a
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+would
+allow
+vocabularies
+to
+be
+marked
+with
+datatype
+information,
+so
+that
+a
+<code>
+dc:time
+</code>
+value,
+for
+example,
+would
+be
+understood
+to
+represent
+a
+literal
+with
+datatype
+<code>
+xsd:date
+</code>.
+This
+could
+be
+done
+by
+adding
+information
+for
+each
+property
+in
+the
+vocabulary
+requiring
+special
+treatment.
+</p>
+<p>
+This
+might
+be
+represented
+using
+a
+syntax
+such
+as
+the
+following:
+</p>
+<del class="diff-old"> {
+ "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "dateCreated": {"datatype": "http://www.w3.org/2001/XMLSchema#date"}
+ }
+ }
+</del>
+ <pre class="example">{
+<ins class="diff-chg"> "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered"<span class="diff">,
+ "properties": {
+ "dateCreated": {"datatype": "http://www.w3.org/2001/XMLSchema#date"}
+ }</span>
+ }
+</ins>
+}
+</pre>
+<p>
+The
+<code>
+datatype
+</code>
+identifies
+a
+URI
+to
+be
+used
+in
+constructing
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>.
+</p>
+<p>
+In
+most
+cases,
+the
+relevant
+datatype
+for
+a
+value
+can
+be
+derived
+from
+knowledge
+of
+what
+property
+the
+value
+is
+for
+and
+the
+syntax
+of
+the
+value
+itself.
+Thus,
+values
+can
+be
+given
+datatypes
+in
+a
+post-processing
+step
+after
+the
+mapping
+of
+microdata
+to
+RDF
+described
+by
+this
+specification.
+However,
+where
+there
+is
+information
+in
+the
+HTML
+markup,
+such
+as
+knowledge
+of
+what
+element
+was
+used
+to
+mark
+up
+the
+value,
+which
+can
+help
+with
+determining
+its
+datatype,
+that
+information
+is
+used
+by
+this
+specification.
+</p>
+<p>
+This
+concept
+is
+not
+explored
+further
+at
+this
+time,
+but
+could
+be
+developed
+further
+in
+a
+future
+revision
+of
+this
+document.
+</p>
+</div>
+<p class="note">
+If
+property
+URI
+generation
+was
+fixed
+to
+<code>
+vocabulary
+</code>,
+multiple
+values
+always
+generated
+both
+<code>
+unordered
+</code>
+and
+<code>
+ordered
+</code>
+representations,
+and
+there
+were
+<code>
+datatype
+</code>
+support,
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+could
+be
+reduced
+to
+a
+simple
+list
+of
+URLs
+without
+any
+further
+structure
+necessary.
+</p>
+</div>
+<div id="algorithm" class="section">
+<h2>
+<span class="secno">
+4.
+</span>
+Algorithm
+</h2>
+<p>
+Transformation
+of
+Microdata
+to
+RDF
+makes
+use
+of
+general
+processing
+rules
+described
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]
+for
+the
+treatment
+of
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+s.
+</p>
+<div id="algorithm-terms" class="section">
+<h3>
+<span class="secno">
+4.1
+</span>
+Algorithm
+Terms
+</h3>
+<dl>
+<dt>
+<dfn title="absolute_url" id="dfn-absolute_url">
+absolute
+URL
+</dfn>
+</dt>
+<dd>
+The
+term
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/urls.html#absolute-url">
+absolute
+URL
+</a>
+</cite>
+is
+defined
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+].
+</dd>
+<dt>
+<dfn title="blank_node" id="dfn-blank_node">
+blank
+node
+</dfn>
+</dt>
+<dd>
+A
+blank
+node
+is
+a
+node
+in
+a
+graph
+that
+is
+neither
+a
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+nor
+a
+<a class="tref internalDFN" title="literal" href="#dfn-literal">
+literal
+</a>.
+<a class="tref internalDFN" title="item" href="#dfn-item">
+Item
+</a>
+s
+without
+a
+<a class="tref internalDFN" title="global_identifier" href="#dfn-global_identifier">
+global
+identifier
+</a>
+have
+a
+blank
+node
+allocated
+to
+them.
+(See
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-CONCEPTS">
+RDF-CONCEPTS
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn title="document_base" id="dfn-document_base">
+document
+base
+</dfn>
+</dt>
+<dd>
+The
+base
+address
+of
+the
+document
+being
+processed,
+as
+defined
+in
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/urls.html#resolving-urls">
+Resolving
+URLs
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+].
+</dd>
+<dt>
+<dfn title="evaluation_context" id="dfn-evaluation_context">
+evaluation
+context
+</dfn>
+</dt>
+<dd>
+A
+data
+structure
+including
+the
+following
+elements:
+<dl>
+<dt>
+<dfn title="memory" id="dfn-memory">
+memory
+</dfn>
+</dt>
+<dd>
+a
+mapping
+of
+items
+to
+subjects,
+initially
+empty;
+</dd>
+<dt>
+<dfn title="current_name" id="dfn-current_name">
+current
+name
+</dfn>
+</dt>
+<dd>
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+for
+the
+in-scope
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>,
+used
+for
+generating
+URIs
+for
+properties
+of
+items
+without
+an
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+;
+<div class="note">
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+name
+</a>
+is
+required
+for
+the
+<code>
+contextual
+</code>
+property
+URI
+generation
+scheme.
+Without
+this
+scheme,
+this
+evaluation
+context
+component
+would
+not
+be
+required.
+</div>
+</dd>
+<dt>
+<dfn title="current_type" id="dfn-current_type">
+current
+type
+</dfn>
+</dt>
+<dd>
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+for
+the
+<em>
+current
+type
+</em>,
+used
+when
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+does
+not
+contain
+an
+<a class="tref internalDFN" title="item_type" href="#dfn-item_type">
+item
+type
+</a>
+;
+</dd>
+<dt>
+<dfn title="current_vocabulary" id="dfn-current_vocabulary">
+current
+vocabulary
+</dfn>
+</dt>
+<dd>
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>
+for
+the
+<em>
+current
+vocabulary
+</em>,
+from
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>.
+</dd>
+</dl>
+</dd>
+<dt>
+<dfn title="item" id="dfn-item">
+item
+</dfn>
+</dt>
+<dd>
+An
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+is
+described
+by
+an
+element
+containing
+an
+<a class="aref internalDFN" title="itemscope" href="#dfn-itemscope">
+@itemscope
+</a>
+attribute.
+The
+list
+of
+top-level
+microdata
+items
+may
+be
+retrieved
+using
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+Microdata
+DOM
+API
+</a>
+</cite>
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-document-getitems">
+document.getItems
+</a>
+</cite>
+</code>
+method.
+</dd>
+<dt>
+<dfn title="item_properties" id="dfn-item_properties">
+item
+properties
+</dfn>
+</dt>
+<dd>
+The
+mechanism
+for
+finding
+the
+<a class="tref internalDFN" title="item_properties" href="#dfn-item_properties">
+properties
+of
+an
+item
+</a>
+The
+list
+of
+item
+properties
+items
+may
+be
+retrieved
+using
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+Microdata
+DOM
+API
+</a>
+</cite>
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-properties">
+element.properties
+</a>
+</cite>
+</code>
+attribute.
+</dd>
+<dt>
+<dfn title="fragment-escape" id="dfn-fragment-escape">
+fragment-escape
+</dfn>
+</dt>
+<dd>
+The
+term
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/urls.html#fragment-escaped">
+fragment-escape
+</a>
+</cite>
+is
+defined
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+].
+This
+involves
+transforming
+elements
+added
+to
+URLs
+to
+ensure
+that
+the
+result
+remains
+a
+valid
+URL.
+The
+following
+characters
+are
+subject
+to
+percent
+escaping:
+<ul>
+<li>
+U+0022
+QUOTATION
+MARK
+character
+<del class="diff-old">(")
+</del>
+<ins class="diff-chg">(")
+</ins>
+</li>
+<li>
+U+0023
+NUMBER
+SIGN
+character
+(#)
+</li>
+<li>
+U+0025
+PERCENT
+SIGN
+character
+(%)
+</li>
+<li>
+U+003C
+LESS-THAN
+SIGN
+character
+(<)
+</li>
+<li>
+U+003E
+GREATER-THAN
+SIGN
+character
+(>)
+</li>
+<li>
+U+005B
+LEFT
+SQUARE
+BRACKET
+character
+([)
+</li>
+<li>
+U+005C
+REVERSE
+SOLIDUS
+character
+(\)
+</li>
+<li>
+U+005D
+RIGHT
+SQUARE
+BRACKET
+character
+(])
+</li>
+<li>
+U+005E
+CIRCUMFLEX
+ACCENT
+character
+(^)
+</li>
+<li>
+U+007B
+LEFT
+CURLY
+BRACKET
+character
+({)
+</li>
+<li>
+U+007C
+VERTICAL
+LINE
+character
+(|)
+</li>
+<li>
+U+007D
+RIGHT
+CURLY
+BRACKET
+character
+(})
+</li>
+</ul>
+</dd>
+<dt>
+<dfn title="global_identifier" id="dfn-global_identifier">
+global
+identifier
+</dfn>
+</dt>
+<dd>
+The
+value
+of
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+'s
+<a class="aref internalDFN" title="itemid" href="#dfn-itemid">
+@itemid
+</a>
+attribute,
+if
+it
+has
+one.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#attr-itemscope">
+Items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn title="literal" id="dfn-literal">
+literal
+</dfn>
+</dt>
+<dd>
+Literals
+are
+values
+such
+as
+strings
+and
+dates,
+including
+<dfn title="typed_literal" id="dfn-typed_literal">
+typed
+literal
+</dfn>
+s
+and
+<dfn title="plain_literal" id="dfn-plain_literal">
+plain
+literal
+</dfn>
+s.
+(See
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-CONCEPTS">
+RDF-CONCEPTS
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn title="property" id="dfn-property">
+property
+</dfn>
+</dt>
+<dd>
+Each
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>
+identifies
+a
+<a class="tref internalDFN" title="property" href="#dfn-property">
+property
+</a>
+of
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+An
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+may
+have
+multiple
+elements
+sharing
+the
+same
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>,
+creating
+a
+multi-valued
+<a class="tref internalDFN" title="property" href="#dfn-property">
+property
+</a>.
+</dd>
+<dt>
+<dfn title="property_names" id="dfn-property_names">
+property
+names
+</dfn>
+</dt>
+<dd>
+The
+tokens
+of
+an
+element's
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+attribute.
+Each
+token
+is
+a
+<a class="tref internalDFN" title="name" href="#dfn-name">
+name
+</a>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#property-names">
+Names:
+the
+itemprop
+attribute
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn title="property_value" id="dfn-property_value">
+property
+value
+</dfn>
+</dt>
+<dd>
+The
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+of
+a
+name-value
+pair
+added
+by
+an
+element
+with
+an
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+attribute
+depends
+on
+the
+element.
+<dl>
+<dt>
+If
+the
+element
+has
+no
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+attribute
+</dt>
+<dd>
+The
+value
+is
+null
+and
+no
+triple
+should
+be
+generated.
+</dd>
+<dt>
+If
+the
+element
+creates
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+(by
+having
+an
+<a class="aref internalDFN" title="itemscope" href="#dfn-itemscope">
+@itemscope
+</a>
+attribute)
+</dt>
+<dd>
+The
+value
+is
+the
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+or
+<a class="tref internalDFN" title="blank_node" href="#dfn-blank_node">
+blank
+node
+</a>
+returned
+from
+<a href="#generate-the-triples">
+generate
+the
+triples
+</a>
+for
+that
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+</dd>
+<dt>
+If
+the
+element
+is
+a
+URL
+property
+element
+(
+<code>
+a
+</code>,
+<code>
+area
+</code>,
+<code>
+audio
+</code>,
+<code>
+embed
+</code>,
+<code>
+iframe
+</code>,
+<code>
+img
+</code>,
+<code>
+link
+</code>,
+<code>
+object
+</code>,
+<code>
+source
+</code>,
+<code>
+track
+</code>
+or
+<code>
+video
+</code>
+)
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+created
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemvalue">
+element.itemValue
+</a>
+</cite>
+</code>.
+(See
+relevant
+attribute
+descriptions
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+]).
+</dd>
+<dt>
+If
+the
+element
+is
+a
+<code>
+time
+</code>
+element.
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="literal" href="#dfn-literal">
+literal
+</a>
+made
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemvalue">
+element.itemValue
+</a>
+</cite>
+</code>.
+<dl>
+<dt>
+If
+the
+value
+is
+a
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-date-string">
+valid
+date
+string
+</a>
+</cite>
+having
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#date">
+xsd:date
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#date
+</code>.
+</dd>
+<dt>
+If
+the
+value
+is
+a
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-time-string">
+valid
+time
+string
+</a>
+</cite>
+having
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#time">
+xsd:time
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#time
+</code>.
+</dd>
+<dt>
+If
+the
+value
+is
+a
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-local-date-and-time-string">
+valid
+local
+date
+and
+time
+string
+</a>
+</cite>
+or
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-global-date-and-time-string">
+valid
+global
+date
+and
+time
+string
+</a>
+</cite>
+having
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#dateTime">
+xsd:dateTime
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#dateTime
+</code>.
+</dd>
+<dt>
+If
+the
+value
+is
+a
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-month-string">
+valid
+month
+string
+</a>
+</cite>
+having
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#gYearMonth">
+xsd:gYearMonth
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#gYearMonth
+</code>.
+</dd>
+<dt>
+If
+the
+value
+is
+a
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/common-microsyntaxes.html#valid-non-negative-integer">
+valid
+non-negative
+integer
+</a>
+</cite>
+having
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#gYearMonth">
+xsd:gYear
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#gYearMonth
+</code>.
+</dd>
+<dt>
+If
+the
+value
+has
+the
+lexical
+form
+of
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#duration">
+xsd:duration
+</a>
+</cite>
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+].
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="typed_literal" href="#dfn-typed_literal">
+typed
+literal
+</a>
+composed
+of
+the
+value
+and
+<code>
+http://www.w3.org/2001/XMLSchema#duration
+</code>.
+<p class="note">
+The
+referenced
+version
+of
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+]
+does
+not
+include
+a
+<em>
+duration
+</em>
+data
+type,
+but
+it
+is
+in
+the
+Editor's
+Draft
+and
+is
+expected
+to
+be
+included
+in
+a
+forthcoming
+update
+to
+the
+Working
+Draft
+</p>
+</dd>
+<dt>
+Otherwise
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="plain_literal" href="#dfn-plain_literal">
+plain
+literal
+</a>
+created
+from
+the
+value
+with
+language
+information
+set
+from
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/elements.html#the-lang-and-xml:lang-attributes">
+lang
+</a>
+</cite>
+IDL
+attribute
+of
+the
+property
+element.
+<p class="note">
+The
+HTML
+<em>
+valid
+yearless
+date
+string
+</em>
+is
+similar
+to
+<cite>
+<a href="http://www.w3.org/TR/xmlschema-2/#gMonthDay">
+xsd:gMonthDay
+</a>
+</cite>,
+but
+the
+lexical
+forms
+differ,
+so
+it
+is
+not
+included
+in
+this
+conversion.
+</p>
+</dd>
+</dl>
+<p>
+See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/rendering.html#the-time-element-0">
+The
+<code>
+time
+</code>
+element
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-HTML5">
+HTML5
+</a>
+</cite>
+].
+</p>
+</dd>
+<dt>
+Otherwise
+</dt>
+<dd>
+The
+value
+is
+a
+<a class="tref internalDFN" title="plain_literal" href="#dfn-plain_literal">
+plain
+literal
+</a>
+created
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemvalue">
+element.itemValue
+</a>
+</cite>
+</code>
+with
+language
+information
+set
+from
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-html5-20110525/elements.html#the-lang-and-xml:lang-attributes">
+lang
+</a>
+</cite>
+IDL
+attribute
+of
+the
+property
+element.
+</dd>
+</dl>
+</dd>
+<dt>
+<dfn title="top-level_item" id="dfn-top-level_item">
+top-level
+item
+</dfn>
+</dt>
+<dd>
+An
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+which
+does
+not
+contain
+an
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+attribute.
+Available
+through
+the
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#microdata-dom-api">
+Microdata
+DOM
+API
+</a>
+</cite>
+as
+<code>
+document.getItems
+</code>.
+(See
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#top-level-microdata-items">
+Associating
+names
+with
+items
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+]).
+</dd>
+<dt>
+<dfn title="uri_reference" id="dfn-uri_reference">
+URI
+reference
+</dfn>
+</dt>
+<dd>
+URI
+references
+are
+suitable
+to
+be
+used
+in
+<em>
+subject
+</em>,
+<em>
+predicate
+</em>
+or
+<em>
+object
+</em>
+positions
+within
+an
+RDF
+triple,
+as
+opposed
+to
+a
+<a class="tref internalDFN" title="literal" href="#dfn-literal">
+literal
+</a>
+value
+that
+may
+contain
+a
+string
+representation
+of
+a
+URI.
+(See
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-CONCEPTS">
+RDF-CONCEPTS
+</a>
+</cite>
+]).
+<div class="issue">
+<p>
+The
+HTML5/microdata
+content
+model
+for
+<code>
+@href
+</code>,
+<code>
+@src
+</code>,
+<code>
+@data
+</code>,
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+and
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+and
+<a class="aref internalDFN" title="itemid" href="#dfn-itemid">
+@itemid
+</a>
+is
+that
+of
+a
+URL,
+not
+a
+URI
+or
+IRI.
+</p>
+<p>
+A
+proposed
+mechanism
+for
+specifying
+the
+range
+of
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+s
+to
+be
+URI
+reference
+or
+IRI
+could
+allow
+these
+to
+be
+specified
+as
+subject
+or
+object
+using
+a
+<code>
+@content
+</code>
+attribute.
+</p>
+</div>
+</dd>
+<dt>
+<dfn title="vocabulary" id="dfn-vocabulary">
+vocabulary
+</dfn>
+</dt>
+<dd>
+A
+vocabulary
+is
+a
+collection
+of
+URIs,
+suitable
+for
+use
+as
+an
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+or
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+value,
+that
+share
+a
+common
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>.
+That
+prefix
+is
+the
+vocabulary
+URI.
+A
+vocabulary
+URI
+is
+not
+allowed
+to
+be
+a
+prefix
+of
+another
+vocabulary
+URI.
+<div class="note">
+This
+definition
+differs
+from
+the
+language
+in
+the
+HTML
+spec
+and
+is
+just
+for
+the
+purpose
+of
+this
+document.
+In
+HTML,
+a
+vocabulary
+is
+a
+specification,
+and
+doesn't
+have
+a
+URI.
+In
+our
+view,
+if
+one
+specification
+defines
+ten
+<a class="aref internalDFN" title="itemtype" href="#dfn-itemtype">
+@itemtype
+</a>
+s,
+then
+these
+could
+be
+treated
+as
+one
+vocabulary
+or
+as
+ten
+distinct
+vocabularies;
+it
+is
+entirely
+up
+to
+the
+vocabulary
+creator.
+</div>
+</dd>
+</dl>
+</div>
+<div id="rdf-conversion-algorithm" class="section">
+<h3>
+<span class="secno">
+4.2
+</span>
+RDF
+Conversion
+Algorithm
+</h3>
+<p>
+A
+HTML
+document
+containing
+microdata
+<em class="rfc2119" title="may">
+may
+</em>
+be
+converted
+to
+any
+other
+RDF-compatible
+document
+format
+using
+the
+algorithm
+specified
+in
+this
+section.
+</p>
+<p>
+A
+conforming
+microdata
+processor
+implementing
+RDF
+conversion
+<em class="rfc2119" title="must">
+must
+</em>
+implement
+a
+processing
+algorithm
+that
+results
+in
+the
+equivalent
+triples
+to
+those
+that
+the
+following
+algorithm
+generates:
+</p>
+<p>
+Set
+<em>
+item
+list
+</em>
+to
+an
+empty
+list.
+</p>
+<ol class="algorithm">
+<li>
+For
+each
+element
+that
+is
+also
+a
+<a class="tref internalDFN" title="top-level_item" href="#dfn-top-level_item">
+top-level
+item
+</a>
+run
+the
+following
+algorithm:
+<ol class="algorithm">
+<li>
+<a href="#generate-the-triples">
+Generate
+the
+triples
+</a>
+for
+an
+item
+<em>
+item
+</em>,
+using
+the
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+evaluation
+context
+</a>.
+Let
+<em>
+result
+</em>
+be
+the
+(
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+or
+<a class="tref internalDFN" title="blank_node" href="#dfn-blank_node">
+blank
+node
+</a>
+)
+subject
+returned.
+</li>
+<li>
+Append
+<em>
+result
+</em>
+to
+<em>
+item
+list
+</em>.
+</li>
+</ol>
+</li>
+<li>
+<a href="#generate-collection">
+Generate
+an
+RDF
+Collection
+</a>
+<em>
+list
+</em>
+from
+the
+ordered
+list
+of
+values.
+Set
+<em>
+value
+</em>
+to
+the
+value
+returned
+from
+<a href="#generate-collection">
+generate
+an
+RDF
+Collection
+</a>.
+</li>
+<li>
+Generate
+the
+following
+triple:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<a class="tref internalDFN" title="document_base" href="#dfn-document_base">
+Document
+base
+</a>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<code>
+http://www.w3.org/ns/md#item
+</code>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+<em>
+value
+</em>
+</dd>
+</dl>
+</li>
+</ol>
+</div>
+<div id="generate-the-triples" class="section">
+<h3>
+<span class="secno">
+4.3
+</span>
+Generate
+the
+triples
+</h3>
+<p>
+When
+the
+user
+agent
+is
+to
+Generate
+triples
+for
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+<em>
+item
+</em>,
+given
+<del class="diff-old">an
+</del>
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+<del class="diff-old">Evaluation
+Context
+</del>
+<ins class="diff-chg">evaluation
+context
+</ins>
+</a>,
+it
+must
+run
+the
+following
+steps:
+</p>
+<p class="note">
+This
+algorithm
+has
+undergone
+substantial
+change
+from
+the
+original
+microdata
+specification
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-MICRODATA">
+MICRODATA
+</a>
+</cite>
+].
+</p>
+<ol class="algorithm">
+<li>
+If
+there
+is
+an
+entry
+for
+<em>
+item
+</em>
+in
+<a class="tref internalDFN" title="memory" href="#dfn-memory">
+memory
+</a>,
+then
+let
+<em>
+subject
+</em>
+be
+the
+subject
+of
+that
+entry.
+Otherwise,
+if
+<em>
+item
+</em>
+has
+a
+<a class="tref internalDFN" title="global_identifier" href="#dfn-global_identifier">
+global
+identifier
+</a>
+and
+that
+<a class="tref internalDFN" title="global_identifier" href="#dfn-global_identifier">
+global
+identifier
+</a>
+is
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>,
+let
+<em>
+subject
+</em>
+be
+that
+<a class="tref internalDFN" title="global_identifier" href="#dfn-global_identifier">
+global
+identifier
+</a>.
+Otherwise,
+let
+<em>
+subject
+</em>
+be
+a
+new
+<a class="tref internalDFN" title="blank_node" href="#dfn-blank_node">
+blank
+node
+</a>.
+</li>
+<li>
+Add
+a
+mapping
+from
+<em>
+item
+</em>
+to
+<em>
+subject
+</em>
+in
+<a class="tref internalDFN" title="memory" href="#dfn-memory">
+memory
+</a>
+</li>
+<li>
+For
+each
+<em>
+type
+</em>
+returned
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemtype">
+element.itemType
+</a>
+</cite>
+</code>
+of
+the
+element
+defining
+the
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+<ol class="algorithm">
+<li>
+If
+<em>
+type
+</em>
+is
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>,
+generate
+the
+following
+triple:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<em>
+subject
+</em>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<code>
+http://www.w3.org/1999/02/22-rdf-syntax-ns#type
+</code>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+<em>
+type
+</em>
+(as
+a
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+)
+</dd>
+</dl>
+</li>
+</ol>
+</li>
+<li>
+Set
+<em>
+type
+</em>
+to
+the
+first
+value
+returned
+from
+<code>
+<cite>
+<a href="http://www.w3.org/TR/2011/WD-microdata-20110525/#dom-itemtype">
+element.itemType
+</a>
+</cite>
+</code>
+of
+the
+element
+defining
+the
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>.
+</li>
+<li>
+If
+<em>
+type
+</em>
+is
+<del class="diff-old">not
+</del>
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>,
+set
+<del class="diff-old">it
+</del>
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+<ins class="diff-chg">current
+name
+</ins></a><ins class="diff-chg">
+in
+</ins><a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context"><ins class="diff-chg">
+evaluation
+context
+</ins></a><ins class="diff-chg">
+to
+null.
+</ins></li><li><ins class="diff-chg">
+Otherwise,
+set
+</ins><em><ins class="diff-chg">
+type
+</ins></em>
+to
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>
+from
+<del class="diff-old">the
+</del>
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+<del class="diff-old">Evaluation
+Context
+</del>
+<ins class="diff-chg">evaluation
+context
+</ins>
+</a>
+if
+not
+empty.
+</li>
+<li>
+If
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+a
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>
+that
+is
+a
+character
+for
+character
+match
+of
+<em>
+type
+</em>
+up
+to
+the
+length
+of
+the
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>,
+set
+<em>
+vocab
+</em>
+as
+that
+<a class="tref internalDFN" title="uri_prefix" href="#dfn-uri_prefix">
+URI
+prefix
+</a>.
+</li>
+<li>
+Otherwise,
+if
+type
+is
+not
+empty,
+construct
+<em>
+vocab
+</em>
+by
+removing
+everything
+following
+the
+last
+SOLIDUS
+U+002F
+<del class="diff-old">("/")
+</del>
+<ins class="diff-chg">("/")
+</ins>
+or
+NUMBER
+SIGN
+U+0023
+<del class="diff-old">("#")
+</del>
+<ins class="diff-chg">("#")
+</ins>
+from
+<ins class="diff-new">the
+</ins><em><ins class="diff-new">
+path
+</ins></em><ins class="diff-new">
+component
+of
+</ins>
+<em>
+type
+</em>.
+</li>
+<li>
+Update
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+evaluation
+context
+</a>
+setting
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>
+to
+<em>
+vocab
+</em>.
+</li>
+<li>
+Set
+<em>
+property
+list
+</em>
+to
+an
+empty
+array
+mapping
+properties
+to
+one
+or
+more
+<em>
+value
+</em>
+s
+as
+established
+below.
+</li>
+<li>
+For
+each
+element
+<em>
+element
+</em>
+that
+has
+one
+or
+more
+<a class="tref internalDFN" title="property_names" href="#dfn-property_names">
+property
+names
+</a>
+and
+is
+one
+of
+the
+<a class="tref internalDFN" title="item_properties" href="#dfn-item_properties">
+properties
+of
+the
+item
+</a>
+<em>
+item
+</em>,
+in
+the
+order
+those
+elements
+are
+given
+by
+the
+algorithm
+that
+returns
+the
+<a class="tref internalDFN" title="item_properties" href="#dfn-item_properties">
+properties
+of
+the
+item
+</a>,
+run
+the
+following
+substep:
+<ol class="algorithm">
+<li>
+For
+each
+<em>
+name
+</em>
+in
+the
+element's
+<a class="tref internalDFN" title="property_names" href="#dfn-property_names">
+property
+names
+</a>,
+run
+the
+following
+substeps:
+<ol class="algorithm">
+<li>
+Let
+<em>
+context
+</em>
+be
+a
+copy
+of
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+evaluation
+context
+</a>
+with
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>
+set
+to
+<em>
+type
+</em>.
+</li>
+<li>
+Let
+<em>
+predicate
+</em>
+be
+the
+result
+of
+<a href="#generate-predicate-uri">
+generate
+predicate
+URI
+</a>
+using
+<em>
+context
+</em>
+and
+<em>
+name
+</em>.
+Update
+<em>
+context
+</em>
+by
+setting
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+name
+</a>
+to
+<em>
+predicate
+</em>.
+</li>
+<li>
+Let
+<em>
+value
+</em>
+be
+the
+<a class="tref internalDFN" title="property_value" href="#dfn-property_value">
+property
+value
+</a>
+of
+<em>
+element
+</em>.
+</li>
+<li>
+If
+<em>
+value
+</em>
+is
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>,
+then
+<a href="#generate-the-triples">
+generate
+the
+triples
+</a>
+for
+<em>
+value
+</em>
+using
+<em>
+context
+</em>.
+Replace
+<em>
+value
+</em>
+by
+the
+subject
+returned
+from
+those
+steps.
+</li>
+<li>
+Add
+<em>
+value
+</em>
+to
+<em>
+property
+list
+</em>
+for
+<em>
+predicate
+</em>.
+</li>
+</ol>
+</li>
+</ol>
+</li>
+<li>
+For
+each
+<em>
+predicate
+</em>
+in
+<em>
+property
+list
+</em>:
+<ol class="algorithm">
+<li>
+<a href="#generate-property-values">
+Generate
+property
+values
+</a>
+<em>
+subject
+</em>,
+<em>
+predicate
+</em>
+and
+the
+list
+of
+values
+associated
+with
+<em>
+predicate
+</em>
+from
+<em>
+property
+list
+</em>
+as
+<em>
+values
+</em>.
+</li>
+</ol>
+</li>
+<li>
+Return
+<em>
+subject
+</em>
+</li>
+</ol>
+</div>
+<div id="generate-predicate-uri" class="section">
+<h3>
+<span class="secno">
+4.4
+</span>
+Generate
+Predicate
+URI
+</h3>
+<p>
+Predicate
+URI
+generation
+makes
+use
+of
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>,
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+name
+</a>,
+and
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>
+from
+an
+<a class="tref internalDFN" title="evaluation_context" href="#dfn-evaluation_context">
+evaluation
+context
+</a>
+<em>
+context
+</em>
+along
+with
+<em>
+name
+</em>.
+</p>
+<ol class="algorithm">
+<li>
+If
+<em>
+name
+</em>
+is
+an
+<a class="tref internalDFN" title="absolute_url" href="#dfn-absolute_url">
+absolute
+URL
+</a>,
+return
+<em>
+name
+</em>
+as
+a
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>.
+</li>
+<li>
+If
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+current
+type
+</a>
+from
+<em>
+context
+</em>
+is
+null,
+there
+can
+be
+no
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>.
+Return
+the
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+that
+is
+the
+<a class="tref internalDFN" title="document_base" href="#dfn-document_base">
+document
+base
+</a>
+with
+its
+<cite>
+<a href="http://tools.ietf.org/html/rfc3986#section-3.5">
+fragment
+</a>
+</cite>
+set
+to
+the
+<a class="tref internalDFN" title="fragment-escape" href="#dfn-fragment-escape">
+fragment-escape
+</a>
+d
+value
+of
+<em>
+name
+</em>.
+<div class="note">
+This
+rule
+is
+intended
+to
+allow
+for
+a
+the
+case
+where
+no
+type
+is
+set,
+and
+therefore
+there
+is
+no
+vocabulary
+from
+which
+to
+extract
+rules.
+For
+example,
+if
+there
+is
+a
+<a class="tref internalDFN" title="document_base" href="#dfn-document_base">
+document
+base
+</a>
+of
+<code>
+http://example.org/doc
+</code>
+and
+an
+<a class="aref internalDFN" title="itemprop" href="#dfn-itemprop">
+@itemprop
+</a>
+of
+'title',
+a
+URI
+will
+be
+constructed
+to
+be
+<code>
+http://example.org/doc#title
+</code>.
+</div>
+</li>
+<li>
+Otherwise,
+if
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>
+from
+<em>
+context
+</em>
+is
+not
+null
+and
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+has
+an
+entry
+for
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>
+having
+a
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+propertyURI
+</a>
+entry
+that
+is
+not
+null,
+set
+that
+as
+<em>
+scheme
+</em>.
+Otherwise,
+set
+<em>
+scheme
+</em>
+to
+<code>
+vocabulary
+</code>.
+</li>
+<li id="scheme-vocab">
+If
+<em>
+scheme
+</em>
+is
+<code>
+vocabulary
+</code>
+return
+the
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+constructed
+by
+appending
+the
+<a class="tref internalDFN" title="fragment-escape" href="#dfn-fragment-escape">
+fragment-escape
+</a>
+d
+value
+of
+<em>
+name
+</em>
+to
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>,
+separated
+by
+a
+U+0023
+NUMBER
+SIGN
+character
+(#)
+unless
+the
+<a class="tref internalDFN" title="current_vocabulary" href="#dfn-current_vocabulary">
+current
+vocabulary
+</a>
+ends
+with
+either
+a
+U+0023
+NUMBER
+SIGN
+character
+(#)
+or
+SOLIDUS
+U+002F
+(/).
+</li>
+<li id="scheme-context">
+If
+<em>
+scheme
+</em>
+is
+<code>
+contextual
+</code>,
+return
+the
+<a class="tref internalDFN" title="uri_reference" href="#dfn-uri_reference">
+URI
+reference
+</a>
+constructed
+as
+follows:
+<ol class="algorithm">
+<li>
+Let
+<em>
+s
+</em>
+be
+<a class="tref internalDFN" title="current_name" href="#dfn-current_name">
+current
+<del class="diff-old">type
+</del>
+<ins class="diff-chg">name
+</ins>
+</a>
+from
+<em>
+context
+</em>.
+</li>
+<li>
+If
+<code>
+http://www.w3.org/ns/md?type=
+</code>
+is
+a
+prefix
+of
+<em>
+s
+</em>,
+return
+the
+concatenation
+of
+<em>
+s
+</em>,
+a
+U+002E
+FULL
+STOP
+character
+(.)
+and
+the
+<a class="tref internalDFN" title="fragment-escape" href="#dfn-fragment-escape">
+fragment-escape
+</a>
+d
+value
+of
+<em>
+name
+</em>.
+</li>
+<li>
+Otherwise,
+return
+the
+concatenation
+of
+<code>
+http://www.w3.org/ns/md?type=
+</code>,
+the
+<a class="tref internalDFN" title="fragment-escape" href="#dfn-fragment-escape">
+fragment-escape
+</a>
+d
+value
+of
+<del class="diff-old">s
+,
+</del>
+<a class="tref internalDFN" title="current_type" href="#dfn-current_type">
+<ins class="diff-chg">current
+type
+</ins></a>,
+the
+string
+<code>
+&prop=
+</code>,
+and
+the
+<a class="tref internalDFN" title="fragment-escape" href="#dfn-fragment-escape">
+fragment-escape
+</a>
+d
+value
+of
+<em>
+name
+</em>.
+</li>
+</ol>
+</li>
+</ol>
+</div>
+<div id="generate-property-values" class="section">
+<h3>
+<span class="secno">
+4.5
+</span>
+Generate
+Property
+Values
+</h3>
+<p>
+Property
+value
+serialization
+makes
+use
+of
+<em>
+subject
+</em>,
+<em>
+predicate
+</em>
+and
+<em>
+values
+</em>.
+</p>
+<ol class="algorithm">
+<li>
+If
+the
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+a
+URI
+prefix
+that
+is
+a
+character
+for
+character
+match
+of
+<em>
+predicate
+</em>
+up
+to
+the
+length
+of
+the
+URI
+prefix,
+set
+<em>
+vocab
+</em>
+as
+that
+URI
+prefix.
+Otherwise
+set
+<em>
+vocab
+</em>
+to
+null.
+</li>
+<li>
+If
+<em>
+vocab
+</em>
+is
+not
+null
+and
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+has
+an
+entry
+for
+<em>
+vocab
+</em>
+that
+is
+a
+JSON
+Object,
+let
+<em>
+registry
+object
+</em>
+be
+that
+value.
+Otherwise
+set
+<em>
+registry
+object
+</em>
+to
+null.
+</li>
+<li>
+If
+<em>
+registry
+object
+</em>
+is
+not
+null
+and
+<em>
+registry
+object
+</em>
+contains
+key
+<a class="tref internalDFN" title="properties" href="#dfn-properties">
+<code>
+properties
+</code>
+</a>
+which
+has
+a
+JSON
+Object
+value,
+let
+<em>
+properties
+</em>
+be
+that
+value.
+Otherwise,
+set
+<em>
+properties
+</em>
+to
+null.
+</li>
+<li>
+If
+<em>
+properties
+</em>
+is
+not
+null,
+and
+<em>
+properties
+</em>
+contains
+a
+key,
+which
+after
+<a href="#generate-predicate-uri">
+Generate
+Predicate
+URI
+</a>
+expansion
+has
+a
+value
+which
+is
+a
+JSON
+Object,
+let
+<em>
+property
+override
+</em>
+be
+that
+value.
+Otherwise,
+set
+<em>
+property
+override
+</em>
+to
+null.
+</li>
+<li>
+If
+<em>
+property
+override
+</em>
+contains
+the
+key
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>,
+set
+that
+as
+<em>
+method
+</em>.
+</li>
+<li>
+Otherwise,
+if
+<em>
+registry
+object
+</em>
+con
+contains
+the
+key
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>,
+set
+that
+as
+<em>
+method
+</em>.
+</li>
+<li>
+Otherwise,
+set
+<em>
+method
+</em>
+to
+<code>
+unordered
+</code>.
+</li>
+<li id="values-unordered">
+If
+<em>
+method
+</em>
+is
+<code>
+unordered
+</code>,
+for
+each
+<em>
+value
+</em>
+in
+<em>
+values
+</em>,
+generate
+the
+following
+triple:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<em>
+subject
+</em>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<em>
+predicate
+</em>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+<em>
+value
+</em>
+</dd>
+</dl>
+</li>
+<li id="values-list">
+Otherwise,
+if
+<em>
+method
+</em>
+is
+<code>
+list
+</code>:
+<ol class="algorithm">
+<li>
+Set
+<em>
+value
+</em>
+to
+the
+value
+returned
+from
+<a href="#generate-collection">
+generate
+an
+RDF
+Collection
+</a>.
+</li>
+<li>
+Generate
+the
+following
+triple:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<em>
+subject
+</em>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<em>
+predicate
+</em>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+<em>
+value
+</em>
+</dd>
+</dl>
+</li>
+</ol>
+</li>
+</ol>
+</div>
+<div id="generate-collection" class="section">
+<h3>
+<span class="secno">
+4.6
+</span>
+Generate
+RDF
+Collection
+</h3>
+<p>
+An
+<dfn title="rdf_collection" id="dfn-rdf_collection">
+RDF
+Collection
+</dfn>
+is
+a
+mechanism
+for
+defining
+ordered
+sequences
+of
+objects
+in
+RDF
+(See
+<cite>
+<a href="http://www.w3.org/TR/rdf-syntax/#collections">
+RDF
+Collections
+</a>
+</cite>
+in
+[
+<cite>
+<a class="bibref" rel="biblioentry" href="#bib-RDF-SCHEMA">
+RDF-SCHEMA
+</a>
+</cite>
+]).
+As
+the
+RDF
+data-model
+is
+that
+of
+an
+unordered
+graph,
+a
+linking
+method
+using
+properties
+<code>
+rdf:first
+</code>
+and
+<code>
+rdf:next
+</code>
+is
+required
+to
+be
+able
+to
+specify
+a
+particular
+order.
+</p>
+<p>
+In
+the
+microdata
+to
+RDF
+mapping,
+<a class="tref internalDFN" title="rdf_collection" href="#dfn-rdf_collection">
+RDF
+Collection
+</a>
+s
+are
+used
+when
+an
+item
+has
+more
+than
+one
+value
+associated
+with
+a
+given
+property
+to
+ensure
+that
+the
+original
+document
+order
+is
+maintained.
+The
+following
+procedure
+should
+be
+used
+to
+generate
+triples
+when
+an
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+property
+has
+more
+than
+one
+value
+(contained
+in
+<em>
+list
+</em>
+):
+</p>
+<ol class="algorithm">
+<li>
+Create
+a
+new
+array
+<em>
+array
+</em>
+containing
+a
+<a class="tref internalDFN" title="blank_node" href="#dfn-blank_node">
+blank
+node
+</a>
+for
+every
+value
+in
+<em>
+list
+</em>.
+</li>
+<li>
+For
+each
+pair
+of
+<em>
+bnode
+</em>
+from
+<em>
+array
+</em>
+and
+<em>
+value
+</em>
+from
+<em>
+list
+</em>
+the
+following
+triple
+is
+generated:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<em>
+bnode
+</em>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<code>
+http://www.w3.org/1999/02/22-rdf-syntax-ns#first
+</code>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+<em>
+value
+</em>
+</dd>
+</dl>
+</li>
+<li>
+For
+each
+<em>
+bnode
+</em>
+in
+<em>
+array
+</em>
+the
+following
+triple
+is
+generated:
+<dl class="triple">
+<dt>
+subject
+</dt>
+<dd>
+<em>
+bnode
+</em>
+</dd>
+<dt>
+predicate
+</dt>
+<dd>
+<code>
+http://www.w3.org/1999/02/22-rdf-syntax-ns#rest
+</code>
+</dd>
+<dt>
+object
+</dt>
+<dd>
+next
+<em>
+bnode
+</em>
+in
+<em>
+array
+</em>
+or,
+if
+that
+does
+not
+exist,
+<code>
+http://www.w3.org/1999/02/22-rdf-syntax-ns#nil
+</code>
+</dd>
+</dl>
+</li>
+<li>
+Return
+the
+first
+<a class="tref internalDFN" title="blank_node" href="#dfn-blank_node">
+blank
+node
+</a>
+from
+<em>
+array
+</em>.
+</li>
+</ol>
+</div>
+</div>
+<div id="conformance" class="section">
+<h2>
+<span class="secno">
+<ins class="diff-new">5.
+</ins></span><ins class="diff-new">
+Conformance
+</ins></h2><p><ins class="diff-new">
+Systems
+conforming
+to
+this
+specification
+</ins><em class="rfc2119" title="must"><ins class="diff-new">
+must
+</ins></em><ins class="diff-new">
+pass
+all
+the
+tests
+in
+the
+[
+</ins><cite><a class="bibref" rel="biblioentry" href="#bib-MICRODATA-RDF-TESTS"><ins class="diff-new">
+MICRODATA-RDF-TESTS
+</ins></a></cite><ins class="diff-new">
+].
+Passing
+these
+tests
+means:
+</ins></p><ol><li><ins class="diff-new">
+All
+the
+</ins><cite><a href="https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-rdf/tests/index.html#positive-tests"><ins class="diff-new">
+Positive
+Parser
+Tests
+</ins></a></cite><ins class="diff-new">
+must
+return
+a
+value
+of
+</ins><code><ins class="diff-new">
+true
+</ins></code>.</li><li><ins class="diff-new">
+All
+the
+</ins><cite><a href="https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-rdf/tests/index.html#negative-tests"><ins class="diff-new">
+Negative
+Parser
+Tests
+</ins></a></cite><ins class="diff-new">
+must
+return
+a
+value
+of
+</ins><code><ins class="diff-new">
+false
+</ins></code>.</li></ol><p class="note"><ins class="diff-new">
+Tests
+are
+undergoing
+development.
+</ins></p></div>
+<div class="appendix informative section" id="markup-examples">
+<h2>
+<span class="secno">
+A.
+</span>
+Markup
+Examples
+</h2>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+The
+microdata
+example
+below
+expresses
+book
+information
+as
+an
+FRBR
+Work
+item.
+</p>
+<del class="diff-old"><dl itemscope
+ itemtype="http://purl.org/vocab/frbr/core#Work"
+ itemid="http://books.example.com/works/45U8QJGZSQKDH8N"
+ lang="en">
+ <dt>Title</dt>
+ <dd><cite itemprop="http://purl.org/dc/terms/title">Just a Geek</cite></dd>
+ <dt>By</dt>
+ <dd><span itemprop="http://purl.org/dc/terms/creator">Wil Wheaton</span></dd>
+ <dt>Format</dt>
+ <dd itemprop="http://purl.org/vocab/frbr/core#realization"
+ itemscope
+ itemtype="http://purl.org/vocab/frbr/core#Expression"
+ itemid="http://books.example.com/products/9780596007683.BOOK">
+ <link itemprop="http://purl.org/dc/terms/type" href="http://books.example.com/product-types/BOOK">
+ Print
+ </dd>
+ <dd itemprop="http://purl.org/vocab/frbr/core#realization"
+ itemscope
+ itemtype="http://purl.org/vocab/frbr/core#Expression"
+ itemid="http://books.example.com/products/9780596802189.EBOOK">
+ <link itemprop="http://purl.org/dc/terms/type" href="http://books.example.com/product-types/EBOOK">
+ Ebook
+ </dd>
+</del>
+<pre class="example"><dl itemscope
+<ins class="diff-chg"> itemtype="http://purl.org/vocab/frbr/core#Work"
+ itemid="http://books.example.com/works/45U8QJGZSQKDH8N"
+ lang="en">
+ <dt>Title</dt>
+ <dd><cite itemprop="http://purl.org/dc/terms/title">Just a Geek</cite></dd>
+ <dt>By</dt>
+ <dd><span itemprop="http://purl.org/dc/terms/creator">Wil Wheaton</span></dd>
+ <dt>Format</dt>
+ <dd itemprop="http://purl.org/vocab/frbr/core#realization"
+ itemscope
+ itemtype="http://purl.org/vocab/frbr/core#Expression"
+ itemid="http://books.example.com/products/9780596007683.BOOK">
+ <link itemprop="http://purl.org/dc/terms/type" href="http://books.example.com/product-types/BOOK">
+ Print
+ </dd>
+ <dd itemprop="http://purl.org/vocab/frbr/core#realization"
+ itemscope
+ itemtype="http://purl.org/vocab/frbr/core#Expression"
+ itemid="http://books.example.com/products/9780596802189.EBOOK">
+ <link itemprop="http://purl.org/dc/terms/type" href="http://books.example.com/product-types/EBOOK">
+ Ebook
+ </dd>
+</ins>
+</dl>
+</pre>
+<p>
+Assuming
+that
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+a
+an
+entry
+for
+<code>
+http://purl.org/vocab/frbr/core#
+</code>
+with
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+set
+to
+<code>
+vocabulary
+</code>,
+this
+is
+equivalent
+to
+the
+following
+Turtle:
+</p>
+<del class="diff-old">@prefix dc: <http://purl.org/dc/terms/> .
+@prefix md: <http://www.w3.org/ns/md#> .
+@prefix frbr: <http://purl.org/vocab/frbr/core#> .
+<> md:item (<http://books.example.com/works/45U8QJGZSQKDH8N>) .
+<http://books.example.com/works/45U8QJGZSQKDH8N> a frbr:Work ;
+ dc:creator "Wil Wheaton"@en ;
+ dc:title "Just a Geek"@en ;
+ frbr:realization <http://books.example.com/products/9780596007683.BOOK>,
+ <http://books.example.com/products/9780596802189.EBOOK> .
+<http://books.example.com/products/9780596007683.BOOK> a frbr:Expression ;
+ dc:type <http://books.example.com/product-types/BOOK> .
+<http://books.example.com/products/9780596802189.EBOOK> a frbr:Expression ;
+</del>
+<pre class="example">@prefix dc: <http://purl.org/dc/terms/> .
+<ins class="diff-chg">@prefix md: <http://www.w3.org/ns/md#> .
+@prefix frbr: <http://purl.org/vocab/frbr/core#> .
+
+<> md:item (<http://books.example.com/works/45U8QJGZSQKDH8N>) .
+
+<http://books.example.com/works/45U8QJGZSQKDH8N> a frbr:Work ;
+ dc:creator "Wil Wheaton"@en ;
+ dc:title "Just a Geek"@en ;
+ frbr:realization <http://books.example.com/products/9780596007683.BOOK>,
+ <http://books.example.com/products/9780596802189.EBOOK> .
+
+<http://books.example.com/products/9780596007683.BOOK> a frbr:Expression ;
+ dc:type <http://books.example.com/product-types/BOOK> .
+
+<http://books.example.com/products/9780596802189.EBOOK> a frbr:Expression ;
+</ins>
+dc:type
+<http://books.example.com/product-types/EBOOK>
+.
+</pre>
+<p>
+The
+following
+snippet
+of
+HTML
+has
+microdata
+for
+two
+people
+with
+the
+same
+address.
+This
+illustrates
+two
+<a class="tref internalDFN" title="item" href="#dfn-item">
+item
+</a>
+s
+referencing
+a
+third
+item,
+and
+how
+only
+a
+single
+RDF
+resource
+definition
+is
+created
+for
+that
+third
+item.
+</p>
+<del class="diff-old"><p>
+ Both
+ <span itemscope="" itemtype="http://microformats.org/profile/hcard" itemref="home">
+ <span itemprop="fn"
+ ><span itemprop="n" itemscope=""
+ ><span itemprop="given-name">Princeton</span></span></span>
+ </span>
+ and
+ <span itemscope="" itemtype="http://microformats.org/profile/hcard" itemref="home">
+ <span itemprop="fn"
+ ><span itemprop="n" itemscope=""
+ ><span itemprop="given-name">Trekkie</span></span></span>
+ </span>
+ live at
+ <span id="home" itemprop="adr" itemscope="">
+ <span itemprop="street-address">Avenue Q</span>.
+ </span>
+</del>
+<pre class="example"><p>
+<ins class="diff-chg"> Both
+ <span itemscope="" itemtype="http://microformats.org/profile/hcard" itemref="home">
+ <span itemprop="fn"
+ ><span itemprop="n" itemscope=""
+ ><span itemprop="given-name">Princeton</span></span></span>
+ </span>
+ and
+ <span itemscope="" itemtype="http://microformats.org/profile/hcard" itemref="home">
+ <span itemprop="fn"
+ ><span itemprop="n" itemscope=""
+ ><span itemprop="given-name">Trekkie</span></span></span>
+ </span>
+ live at
+ <span id="home" itemprop="adr" itemscope="">
+ <span itemprop="street-address">Avenue Q</span>.
+ </span>
+</ins>
+</p>
+</pre>
+<p>
+Assuming
+that
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+a
+an
+entry
+for
+<code>
+http://microformats.org/profile/hcard
+</code>
+with
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+set
+to
+<code>
+vocabulary
+</code>,
+it
+generates
+these
+triples
+expressed
+in
+Turtle:
+</p>
+<del class="diff-old">@prefix md: <http://www.w3.org/ns/md#> .
+@prefix hcard: <http://microformats.org/profile/hcard#> .
+<> md:item (
+ [ a <http://microformats.org/profile/hcard>;
+ hcard:fn "Princeton";
+ hcard:n [ hcard:given-name "Princeton" ];
+ hcard:adr _:a
+ ]
+ [ a <http://microformats.org/profile/hcard>;
+ hcard:fn "Trekkie";
+ hcard:n [ hcard:given-name "Trekkie" ];
+ hcard:adr _:a
+ ]) .
+</del>
+<pre class="example">@prefix md: <http://www.w3.org/ns/md#> .
+<ins class="diff-chg">@prefix hcard: <http://microformats.org/profile/hcard#> .
+
+<> md:item (
+ [ a <http://microformats.org/profile/hcard>;
+ hcard:fn "Princeton";
+ hcard:n [ hcard:given-name "Princeton" ];
+ hcard:adr _:a
+ ]
+ [ a <http://microformats.org/profile/hcard>;
+ hcard:fn "Trekkie";
+ hcard:n [ hcard:given-name "Trekkie" ];
+ hcard:adr _:a
+ ]) .
+
+</ins>
+_:a
+hcard:street-address
+<del class="diff-old">"Avenue
+Q"
+</del>
+<ins class="diff-chg">"Avenue
+Q"
+</ins>
+.
+</pre>
+<p>
+The
+following
+snippet
+of
+HTML
+has
+microdata
+for
+a
+playlist,
+and
+illustrates
+overriding
+a
+property
+to
+place
+elements
+in
+an
+RDF
+Collection:
+</p>
+<del class="diff-old"><div itemscope="" itemtype="http://schema.org/MusicPlaylist">
+ <span itemprop="name">Classic Rock Playlist</span>
+ <meta itemprop="numTracks" content="2"/>
+ <p>Including works by
+ <span itemprop="byArtist">Lynard Skynard</span> and
+ <span itemprop="byArtist">AC/DC</span></p>.
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 1.<span itemprop="name">Sweet Home Alabama</span> -
+ <span itemprop="byArtist">Lynard Skynard</span>
+ <link href="sweet-home-alabama" itemprop="url" />
+ </div>
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 2.<span itemprop="name">Shook you all Night Long</span> -
+ <span itemprop="byArtist">AC/DC</span>
+ <link href="shook-you-all-night-long" itemprop="url" />
+ </div>
+</del>
+<pre class="example"><div itemscope="" itemtype="http://schema.org/MusicPlaylist">
+<ins class="diff-chg"> <span itemprop="name">Classic Rock Playlist</span>
+ <meta itemprop="numTracks" content="2"/>
+ <p>Including works by
+ <span itemprop="byArtist">Lynard Skynard</span> and
+ <span itemprop="byArtist">AC/DC</span></p>.
+
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 1.<span itemprop="name">Sweet Home Alabama</span> -
+ <span itemprop="byArtist">Lynard Skynard</span>
+ <link href="sweet-home-alabama" itemprop="url" />
+ </div>
+
+ <div itemprop="tracks" itemscope="" itemtype="http://schema.org/MusicRecording">
+ 2.<span itemprop="name">Shook you all Night Long</span> -
+ <span itemprop="byArtist">AC/DC</span>
+ <link href="shook-you-all-night-long" itemprop="url" />
+ </div>
+</ins>
+</div>
+</pre>
+<p>
+Assuming
+that
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+contains
+a
+an
+entry
+for
+<code>
+http://schema.org/
+</code>
+with
+<a class="tref internalDFN" title="propertyuri" href="#dfn-propertyuri">
+<code>
+propertyURI
+</code>
+</a>
+set
+to
+<code>
+vocabulary
+</code>,
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+set
+to
+<code>
+unordered
+</code>
+with
+the
+properties
+<code>
+track
+</code>
+and
+<code>
+byArtist
+</code>
+having
+<a class="tref internalDFN" title="multiplevalues" href="#dfn-multiplevalues">
+<code>
+multipleValues
+</code>
+</a>
+set
+to
+<code>
+list
+</code>,
+it
+generates
+these
+triples
+expressed
+in
+Turtle:
+</p>
+<del class="diff-old">@prefix md: <http://www.w3.org/ns/md#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix schema: <http://schema.org/> .
+<> md:item ([ a schema:MusicPlaylist;
+ schema:name "Classic Rock Playlist";
+ schema:byArtist ("Lynard Skynard" "AC/DC");
+ schema:numTracks "2";
+ schema:tracks (
+ [ a schema:MusicRecording;
+ schema:byArtist ("Lynard Skynard");;
+ schema:name "Sweet Home Alabama";
+ schema:url <sweet-home-alabama>]
+ [ a schema:MusicRecording;
+ schema:byArtist ("AC/DC");;
+ schema:name "Shook you all Night Long";
+ schema:url <shook-you-all-night-long>]
+</del>
+<pre class="example">@prefix md: <http://www.w3.org/ns/md#> .
+<ins class="diff-chg">@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix schema: <http://schema.org/> .
+
+<> md:item ([ a schema:MusicPlaylist;
+ schema:name "Classic Rock Playlist";
+ schema:byArtist ("Lynard Skynard" "AC/DC");
+ schema:numTracks "2";
+ schema:tracks (
+ [ a schema:MusicRecording;
+ schema:byArtist ("Lynard Skynard");;
+ schema:name "Sweet Home Alabama";
+ schema:url <sweet-home-alabama>]
+ [ a schema:MusicRecording;
+ schema:byArtist ("AC/DC");;
+ schema:name "Shook you all Night Long";
+ schema:url <shook-you-all-night-long>]
+</ins>
+)]);
+.
+</pre>
+</div>
+<div class="appendix informative section" id="example-registry">
+<h2>
+<span class="secno">
+B.
+</span>
+Example
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+</h2>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+The
+following
+is
+an
+example
+<a class="tref internalDFN" title="registry" href="#dfn-registry">
+registry
+</a>
+in
+JSON
+format.
+</p>
+<del class="diff-old"> {
+ "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "blogPosts": {"multipleValues": "list"},
+ "breadcrumb": {"multipleValues": "list"},
+ "byArtist": {"multipleValues": "list"},
+ "creator": {"multipleValues": "list"},
+ "episodes": {"multipleValues": "list"},
+ "events": {"multipleValues": "list"},
+ "founders": {"multipleValues": "list"},
+ "itemListElement": {"multipleValues": "list"},
+ "musicGroupMember": {"multipleValues": "list"},
+ "performerIn": {"multipleValues": "list"},
+ "performers": {"multipleValues": "list"},
+ "producer": {"multipleValues": "list"},
+ "recipeInstructions": {"multipleValues": "list"},
+ "seasons": {"multipleValues": "list"},
+ "subEvents": {"multipleValues": "list"},
+ "tracks": {"multipleValues": "list"}
+ }
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered"
+ },
+ "http://microformats.org/profile/hcalendar#": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "categories": {"multipleValues": "list"}
+ }
+ },
+ "http://n.whatwg.org/work": {
+ "propertyURI": "contextual",
+ "multipleValues": "list"
+ }
+</del>
+ <pre class="example">{
+<ins class="diff-chg"> "http://schema.org/": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "blogPosts": {"multipleValues": "list"},
+ "breadcrumb": {"multipleValues": "list"},
+ "byArtist": {"multipleValues": "list"},
+ "creator": {"multipleValues": "list"},
+ "episodes": {"multipleValues": "list"},
+ "events": {"multipleValues": "list"},
+ "founders": {"multipleValues": "list"},
+ "itemListElement": {"multipleValues": "list"},
+ "musicGroupMember": {"multipleValues": "list"},
+ "performerIn": {"multipleValues": "list"},
+ "performers": {"multipleValues": "list"},
+ "producer": {"multipleValues": "list"},
+ "recipeInstructions": {"multipleValues": "list"},
+ "seasons": {"multipleValues": "list"},
+ "subEvents": {"multipleValues": "list"},
+ "tracks": {"multipleValues": "list"}
+ }
+ },
+ "http://microformats.org/profile/hcard": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered"
+ },
+ "http://microformats.org/profile/hcalendar#": {
+ "propertyURI": "vocabulary",
+ "multipleValues": "unordered",
+ "properties": {
+ "categories": {"multipleValues": "list"}
+ }
+ }
+</ins>
+}
+</pre>
+</div>
+<div class="appendix informative section" id="acknowledgements">
+<h2>
+<span class="secno">
+<del class="diff-old">B.1
+</del>
+<ins class="diff-chg">C.
+</ins>
+</span>
+Acknowledgements
+</h2>
+<p>
+<em>
+This
+section
+is
+non-normative.
+</em>
+</p>
+<p>
+Thanks
+to
+Richard
+Cyganiak
+for
+property
+URI
+and
+vocabulary
+terminology
+and
+the
+general
+excellent
+consideration
+of
+practical
+problems
+in
+generating
+RDF
+from
+microdata.
+</p>
+</div>
+<div id="references" class="appendix section">
+<h2>
+<span class="secno">
+<del class="diff-old">C.
+</del>
+<ins class="diff-chg">D.
+</ins>
+</span>
+References
+</h2>
+<div id="normative-references" class="section">
+<h3>
+<span class="secno">
+<del class="diff-old">C.1
+</del>
+<ins class="diff-chg">D.1
+</ins>
+</span>
+Normative
+references
+</h3>
+<dl class="bibliography">
+<dt id="bib-HTML5">
+[HTML5]
+</dt>
+<dd>
+Ian
+Hickson;
+David
+Hyatt.
+<a href="http://www.w3.org/TR/html5">
+<cite>
+HTML5.
+</cite>
+</a>
+25
+May
+2011.
+W3C
+Working
+Draft.
+(Work
+in
+progress.)
+URL:
+<a href="http://www.w3.org/TR/html5">
+http://www.w3.org/TR/html5
+</a>
+</dd>
+<dt id="bib-MICRODATA">
+[MICRODATA]
+</dt>
+<dd>
+<cite>
+<a href="http://dev.w3.org/html5/md/">
+HTML
+Microdata
+</a>
+</cite>
+Ian
+Hickson
+Editor.
+World
+Wide
+Web
+Consortium
+(work
+in
+progress).
+18
+November
+2011.
+This
+edition
+of
+the
+HTML
+Microdata
+specification
+is
+http://dev.w3.org/html5/md/.
+The
+<a href="http://dev.w3.org/html5/md/">
+latest
+edition
+of
+HTML
+Microdata
+</a>
+is
+available
+at
+http://www.w3.org/TR/microdata/
+</dd>
+<dt id="bib-RDF-CONCEPTS">
+[RDF-CONCEPTS]
+</dt>
+<dd>
+Graham
+Klyne;
+Jeremy
+J.
+Carroll.
+<a href="http://www.w3.org/TR/2004/REC-rdf-concepts-20040210">
+<cite>
+Resource
+Description
+Framework
+(RDF):
+Concepts
+and
+Abstract
+Syntax.
+</cite>
+</a>
+10
+February
+2004.
+W3C
+Recommendation.
+URL:
+<a href="http://www.w3.org/TR/2004/REC-rdf-concepts-20040210">
+http://www.w3.org/TR/2004/REC-rdf-concepts-20040210
+</a>
+</dd>
+<dt id="bib-RDF-SCHEMA">
+[RDF-SCHEMA]
+</dt>
+<dd>
+Dan
+Brickley;
+Ramanathan
+V.
+Guha.
+<a href="http://www.w3.org/TR/2004/REC-rdf-schema-20040210">
+<cite>
+RDF
+Vocabulary
+Description
+Language
+1.0:
+RDF
+Schema.
+</cite>
+</a>
+10
+February
+2004.
+W3C
+Recommendation.
+URL:
+<a href="http://www.w3.org/TR/2004/REC-rdf-schema-20040210">
+http://www.w3.org/TR/2004/REC-rdf-schema-20040210
+</a>
+</dd>
+<dt id="bib-RFC3986">
+[RFC3986]
+</dt>
+<dd>
+T.
+Berners-Lee;
+R.
+Fielding;
+L.
+Masinter.
+<a href="http://www.ietf.org/rfc/rfc3986.txt">
+<cite>
+Uniform
+Resource
+Identifier
+(URI):
+Generic
+Syntax.
+</cite>
+</a>
+January
+2005.
+Internet
+RFC
+3986.
+URL:
+<a href="http://www.ietf.org/rfc/rfc3986.txt">
+http://www.ietf.org/rfc/rfc3986.txt
+</a>
+</dd>
+</dl>
+</div>
+<div id="informative-references" class="section">
+<h3>
+<span class="secno">
+<del class="diff-old">C.2
+</del>
+<ins class="diff-chg">D.2
+</ins>
+</span>
+Informative
+references
+</h3>
+<dl class="bibliography">
+<dt id="bib-MICRODATA-RDF-SUPPLEMENT">
+<ins class="diff-new">[MICRODATA-RDF-SUPPLEMENT]
+</ins></dt><dd><cite><a href="https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-supplement/index.html"><ins class="diff-new">
+Microdata
+to
+RDF
+Supplement
+</ins></a></cite><ins class="diff-new">
+Gregg
+Kellogg
+Editor.
+World
+Wide
+Web
+Consortium
+(work
+in
+progress).
+22
+January
+2012.
+</ins></dd><dt id="bib-MICRODATA-RDF-TESTS"><ins class="diff-new">
+[MICRODATA-RDF-TESTS]
+</ins></dt><dd><cite><a href="https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-rdf/tests/index.html"><ins class="diff-new">
+Microdata
+to
+RDF
+Tests
+</ins></a></cite><ins class="diff-new">
+Gregg
+Kellogg,
+Ivan
+Herman
+Editors.
+World
+Wide
+Web
+Consortium
+(work
+in
+progress).
+22
+March
+2012.
+</ins></dd>
+<dt id="bib-RDF-SYNTAX-GRAMMAR">
+[RDF-SYNTAX-GRAMMAR]
+</dt>
+<dd>
+Dave
+Beckett.
+<a href="http://www.w3.org/TR/2004/REC-rdf-syntax-grammar-20040210">
+<cite>
+RDF/XML
+Syntax
+Specification
+(Revised).
+</cite>
+</a>
+10
+February
+2004.
+W3C
+Recommendation.
+URL:
+<a href="http://www.w3.org/TR/2004/REC-rdf-syntax-grammar-20040210">
+http://www.w3.org/TR/2004/REC-rdf-syntax-grammar-20040210
+</a>
+</dd>
+</dl>
+</div>
+</div>
+</body>
+</html>
\ No newline at end of file