prov-constraints staging
authorLuc Moreau <l.moreau@ecs.soton.ac.uk>
Wed, 21 Nov 2012 08:31:37 +0000
changeset 4888 6a4c0d5701a8
parent 4887 2038fa325ccb
child 4889 f8a7a0eef454
prov-constraints staging
model/diff-c.html
model/diff.html
model/diff/Makefile
model/releases/CR-prov-constraints-20121211/images/constraints/informedByNonTransitive.png
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model/releases/CR-prov-dm-20121211/diff.html
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+++ b/model/diff-c.html	Wed Nov 21 08:31:37 2012 +0000
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- * Robin Berjon (robin at berjon dot com)
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+  <style>/*****************************************************************
+ * ReSpec <span class="insert">3 </span>CSS
+ * Robin Berjon <span class="delete">(robin at berjon dot com)
+ * v0.05 </span>- <span class="delete">2009-07-31</span><span class="insert">http://berjon.com/</span>
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-</style><link href="http://www.w3.org/StyleSheets/TR/W3C-CR" rel="stylesheet" type="text/css" charset="utf-8"></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">Constraints of the Provenance Data Model</h1><h2 id="subtitle"><a href="diff-c.html"><span class="insert">Changes</span></a><span class="insert"> since Last Call Working Draft  (LC)</span></h2><h2 id="w3c-candidate-recommendation-11-december-2012"><acronym title="World Wide Web Consortium">W3C</acronym> <span class="delete">Working Draft</span><span class="insert">Candidate Recommendation</span> 11 <span class="delete">September</span><span class="insert">December</span> 2012</h2><dl><dt>This version:</dt><dd><span class="delete">http://www.w3.org/TR/2012/WD-prov-constraints-20120911/</span><a href="http://www.w3.org/TR/2012/CR-prov-constraints-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-constraints-20121211/</span></a></dd><dt>Latest published version:</dt><dd><a href="http://www.w3.org/TR/prov-constraints/">http://www.w3.org/TR/prov-constraints/</a></dd><dt>Latest editor's draft:</dt><dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html">http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html</a></dd><dt>Previous version:</dt><dd><span class="delete">http://www.w3.org/TR/2012/WD-prov-constraints-20120503/</span><span class="delete"> (</span><span class="delete">color-coded diffs</span><span class="delete">)</span><a href="http://www.w3.org/TR/2012/WD-prov-constraints-20120911/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-constraints-20120911/</span></a></dd><dt>Editors:</dt><dd><a href="http://homepages.inf.ed.ac.uk/jcheney">James Cheney</a>, University of Edinburgh</dd>
+</span>
+</style><link rel="stylesheet" href="http://www.w3.org/StyleSheets/TR/W3C-CR"></head> 
+  <body><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">Constraints of the Provenance Data Model</h1>
+  
+  <h2 id="w3c-candidate-recommendation-11-december-2012"><abbr title="World Wide Web Consortium">W3C<span class="delete"> Working Draft</span></abbr><span class="insert"> Candidate Recommendation</span> 11 <span class="delete">September</span><span class="insert">December</span> 2012</h2>
+  <dl>
+    
+      <dt>This version:</dt>
+      <dd><a href="http://www.w3.org/TR/2012/CR-prov-constraints-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-constraints-20121211/</span></a></dd>
+      <dt><span class="insert">Latest published version:</span></dt>
+      <dd><a href="http://www.w3.org/TR/prov-constraints/"><span class="insert">http://www.w3.org/TR/prov-constraints/</span></a></dd>
+    
+    
+      <dt><span class="insert">Latest editor's draft:</span></dt>
+      <dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html"><span class="insert">http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html</span></a></dd>
+    
+    
+      <dt><span class="insert">Test suite:</span></dt>
+      <dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/testcases/process.html"><span class="insert">http://dvcs.w3.org/hg/prov/raw-file/default/testcases/process.html</span></a></dd>
+    
+    
+      <dt><span class="insert">Implementation report:</span></dt>
+      <dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/reports/prov-implementations.html"><span class="insert">http://dvcs.w3.org/hg/prov/raw-file/default/reports/prov-implementations.html</span></a></dd>
+    
+    
+    
+      <dt><span class="insert">Previous version:</span></dt>
+      <dd><a href="http://www.w3.org/TR/2012/WD-prov-constraints-20120911/">http://www.w3.org/TR/2012/WD-prov-constraints-20120911/</a> <a href="diff-c.html"><span class="insert">(colored-coded diff)</span></a></dd><span class="delete">Latest published version:</span><span class="delete">http://www.w3.org/TR/prov-constraints/</span><span class="delete">Latest editor's draft:</span><span class="delete">http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html</span><span class="delete">Previous version:</span><span class="delete">http://www.w3.org/TR/2012/WD-prov-constraints-20120503/</span><span class="delete"> (</span><span class="delete">color-coded diffs</span><span class="delete">)</span>
+    
+    
+    <dt>Editors:</dt>
+    <dd><a href="http://homepages.inf.ed.ac.uk/jcheney">James Cheney</a>, University of Edinburgh</dd>
 <dd><a href="http://www.cs.ncl.ac.uk/people/Paolo.Missier">Paolo Missier</a>, Newcastle University</dd>
 <dd><a href="http://www.ecs.soton.ac.uk/~lavm/">Luc Moreau</a>, University of Southampton</dd>
-<dt>Author:</dt><dd><a href="http://users.ugent.be/~tdenies/">Tom De Nies</a>, IBBT - Ghent University</dd>
-</dl><p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> © 2012-2012 <a href="http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a><sup>®</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>
+
+
+    
+      <dt>Author:</dt>
+      <dd><a href="http://users.ugent.be/~tdenies/">Tom De Nies</a>, IBBT - Ghent University</dd>
+
+
+    
+  </dl>
+  
+  
+  
+  
+    
+      <p class="copyright">
+        <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> ©<span class="delete"> 2012-2012 </span><span class="insert"> 
+        2012
+        
+        </span><a href="http://www.w3.org/"><abbr title="World Wide Web Consortium">W3C</abbr></a><sup>®</sup>  
+        (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts Institute of Technology">MIT</abbr></a>, 
+        <a href="http://www.ercim.eu/"><abbr title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>, 
+        <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. 
+        <abbr title="World Wide Web Consortium">W3C</abbr> <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> 
+
+    <section id="abstract" class="introductory"><h2>Abstract</h2>
 <p>
 Provenance is information about entities, activities, and people
 involved in producing a piece of data or thing, which can be used to
 form assessments about its quality, reliability or
 trustworthiness. PROV-DM is the conceptual data model that forms a
-basis for the <acronym title="World Wide Web Consortium">W3C</acronym> provenance (PROV) family of specifications.
+basis for the <abbr title="World Wide Web Consortium">W3C</abbr> provenance (PROV) family of specifications.
 
 </p>
 
@@ -1053,25 +1136,36 @@
 bundles (that is, named instances) and documents (that is, a toplevel
 instance together with zero or more bundles).</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>
-<span class="delete">Last Call</span><h4 id="prov-family-of-documents"><span class="insert">PROV Family of Documents</span></h4>
+</section><section id="sotd" class="introductory"><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 <abbr title="World Wide Web Consortium">W3C</abbr> publications and the latest revision 
+          of this technical report can be found in the <a href="http://www.w3.org/TR/"><abbr title="World Wide Web Consortium">W3C</abbr> technical reports 
+          index</a> at http://www.w3.org/TR/.</em>
+        </p>
+<span class="delete">Last Call</span>
+        
+<h4 id="prov-family-of-documents"><span class="insert">PROV Family of Documents</span></h4>
 This <span class="insert">document </span>is <span class="delete">the second public release of the PROV-CONSTRAINTS document. 
-This is</span><span class="insert">part of the PROV family of documents,</span> a <span class="delete">Last Call Working Draft. The design is not expected</span><span class="insert">set of documents defining various aspects that are necessary</span> to <span class="delete">change significantly, going forward, and now is the key time</span><span class="insert">achieve the vision of inter-operable
-interchange of provenance information in heterogeneous environments such as the Web.  These documents are:
+This is</span><span class="insert">part of the PROV family of documents,</span> a <span class="delete">Last Call Working Draft. The design is not expected</span><span class="insert">set of documents defining various aspects that are necessary</span> to <span class="delete">change significantly, going forward, and now is the key time for external review.</span>
+
+<span class="delete">This specification identifies</span><span class="insert">achieve the vision of inter-operable
+interchange of provenance information in heterogeneous environments such as the Web.</span>  <span class="delete">features at
+risk</span><span class="delete"> related to the at-risk Mention feature of</span><span class="insert">These documents are:
 </span><ul>
-<li> <a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><span class="insert">PROV-OVERVIEW</span></a><span class="insert"> (Note), an overview of the PROV family of documents [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-OVERVIEW"><span class="insert">PROV-OVERVIEW</span></a></cite><span class="insert">];</span></li>
-<li> <a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><span class="insert">PROV-PRIMER</span></a><span class="insert"> (Note), a primer</span> for <span class="delete">external review.</span>
-
-<span class="delete">This specification identifies  </span><span class="delete">features at
-risk</span><span class="delete"> related</span><span class="insert">the PROV data model [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-PRIMER"><span class="insert">PROV-PRIMER</span></a></cite><span class="insert">];</span></li>
-<li> <a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><span class="insert">PROV-O</span></a><span class="insert"> (Recommendation), the PROV ontology, an OWL2 ontology allowing the mapping of PROV</span> to <span class="delete">the at-risk Mention feature of</span><span class="insert">RDF [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-O"><span class="insert">PROV-O</span></a></cite><span class="insert">];</span></li>
-<li> <a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/"><span class="insert">PROV-DM</span></a><span class="insert"> (Recommendation), the PROV data model for provenance</span> [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite><span class="delete">]:
+<li> <a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><span class="insert">PROV-OVERVIEW</span></a><span class="insert"> (Note), an overview of the PROV family of documents</span> [<cite><a class="bibref" href="#bib-PROV-OVERVIEW"><span class="insert">PROV-OVERVIEW</span></a></cite><span class="insert">];</span></li>
+<li> <a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><span class="insert">PROV-PRIMER</span></a><span class="insert"> (Note), a primer for the PROV data model [</span><cite><a class="bibref" href="#bib-PROV-PRIMER"><span class="insert">PROV-PRIMER</span></a></cite><span class="insert">];</span></li>
+<li> <a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><span class="insert">PROV-O</span></a><span class="insert"> (Recommendation), the PROV ontology, an OWL2 ontology allowing the mapping of PROV to RDF [</span><cite><a class="bibref" href="#bib-PROV-O"><span class="insert">PROV-O</span></a></cite><span class="insert">];</span></li>
+<li> <a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/">PROV-DM</a><span class="insert"> (Recommendation), the PROV data model for provenance [</span><cite><a class="bibref" href="#bib-PROV-DM"><span class="insert">PROV-DM</span></a></cite><span class="delete">]:
 </span><span class="delete">Inference 22 (mention-specialization-inference)</span><span class="delete"> and
 </span><span class="delete">Constraint 31 (unique-mention)</span><span class="delete">.
 These might be removed from PROV-CONSTRAINTS.</span>
 
 <span class="insert">];</span></li>
-<li> <a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><span class="insert">PROV-N</span></a><span class="insert"> (Recommendation), a notation for provenance aimed at human consumption [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">];</span></li>
+<li> <a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><span class="insert">PROV-N</span></a><span class="insert"> (Recommendation), a notation for provenance aimed at human consumption [</span><cite><a class="bibref" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">];</span></li>
 <li> <a href="http://www.w3.org/TR/2012/CR-prov-constraints-20121211/"><span class="insert">PROV-CONSTRAINTS</span></a><span class="insert">
 (Recommendation), a set of constraints applying to the </span>PROV <span class="delete">Family of Specifications</span><span class="delete">
 This document is part of the PROV family of specifications, a set of specifications defining various aspects that are necessary to achieve the vision of inter-operable
@@ -1080,8 +1174,8 @@
  <span class="delete">PROV-DM</span><span class="delete">, the PROV </span>data model<span class="delete"> for provenance;</span>
  <span class="delete">PROV-CONSTRAINTS</span><span class="delete">, a set of constraints applying to the PROV data model  </span>
 (this document);</li>
-<li> <span class="delete">PROV-N</span><span class="delete">, a notation</span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><span class="insert">PROV-AQ</span></a><span class="insert"> (Note), the mechanisms</span> for <span class="insert">accessing and querying </span>provenance <span class="delete">aimed at human consumption;</span><span class="insert">[</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-AQ"><span class="insert">PROV-AQ</span></a></cite><span class="insert">]; </span></li>
-<li> <span class="delete">PROV-O</span><span class="delete">,</span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><span class="insert">PROV-XML</span></a><span class="insert"> (Note),  an XML schema for</span> the PROV <span class="delete">ontology,</span><span class="insert">data model [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-XML"><span class="insert">PROV-XML</span></a></cite><span class="insert">].</span></li>
+<li> <span class="delete">PROV-N</span><span class="delete">, a notation</span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><span class="insert">PROV-AQ</span></a><span class="insert"> (Note), the mechanisms</span> for <span class="insert">accessing and querying </span>provenance <span class="delete">aimed at human consumption;</span><span class="insert">[</span><cite><a class="bibref" href="#bib-PROV-AQ"><span class="insert">PROV-AQ</span></a></cite><span class="insert">]; </span></li>
+<li> <span class="delete">PROV-O</span><span class="delete">,</span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><span class="insert">PROV-XML</span></a><span class="insert"> (Note),  an XML schema for</span> the PROV <span class="delete">ontology,</span><span class="insert">data model [</span><cite><a class="bibref" href="#bib-PROV-XML"><span class="insert">PROV-XML</span></a></cite><span class="insert">].</span></li>
 
 </ul>
 <h4 id="how-to-read-the-prov-family-of-documentation"><span class="insert">How to read the PROV Family of Documentation</span></h4>
@@ -1104,27 +1198,78 @@
 should focus on PROV-DM and PROV-CONSTRAINTS.  PROV-O and PROV-N offer examples of mapping to RDF and text, respectively.</li>
 </ul>
 
-<p>This document was published by the <a href="http://www.w3.org/2011/prov/">Provenance Working Group</a> as a <span class="delete">Last Call Working Draft.</span><span class="insert">Candidate Recommendation.</span> This document is intended to become a <acronym title="World Wide Web Consortium">W3C</acronym> Recommendation. If you wish to make comments regarding this document, please send them to <a href="mailto:[email protected]">[email protected]</a> (<a href="mailto:[email protected]?subject=subscribe">subscribe</a>, <a href="http://lists.w3.org/Archives/Public/public-prov-comments/">archives</a>). <span class="delete">The Last Call period ends 10 October</span><acronym title="World Wide Web Consortium"><span class="insert">W3C</span></acronym><span class="insert"> publishes a Candidate Recommendation to indicate that the document is believed to be stable and to encourage implementation by the developer community. This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 31 January</span> 2012. All feedback is welcome.</p><p>Publication as a <span class="delete">Working Draft</span><span class="insert">Candidate Recommendation</span> 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.<span class="delete">This is a Last Call Working Draft and thus the Working Group has determined that this document has satisfied the relevant technical requirements and is sufficiently stable to advance through the Technical Recommendation process.</span></p><p>This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 <acronym title="World Wide Web Consortium">W3C</acronym> Patent Policy</a>. <acronym title="World Wide Web Consortium">W3C</acronym> maintains a <a href="http://www.w3.org/2004/01/pp-impl/46974/status" rel="disclosure">public list of any patent disclosures</a> made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential Claim(s)</a> must disclose the information in accordance with <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 6 of the <acronym title="World Wide Web Consortium">W3C</acronym> Patent Policy</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<br>
-</a><ul class="toc"><li class="tocline"><a href="#conventions" class="tocxref"><span class="secno">1.1 </span>Conventions</a></li><li class="tocline"><a href="#purpose" class="tocxref"><span class="secno">1.2 </span>Purpose of this document</a></li><li class="tocline"><a href="#structure-of-this-document" class="tocxref"><span class="secno">1.3 </span>Structure of this document</a></li><li class="tocline"><a href="#audience" class="tocxref"><span class="secno">1.4 </span> Audience </a></li></ul></li><li class="tocline"><a href="#rationale" class="tocxref"><span class="secno">2. </span>Rationale</a><ul class="toc"><li class="tocline"><a href="#entities--activities-and-agents" class="tocxref"><span class="secno">2.1 </span>Entities, Activities and Agents</a></li><li class="tocline"><a href="#events" class="tocxref"><span class="secno">2.2 </span>Events</a></li><li class="tocline"><a href="#typing-section" class="tocxref"><span class="secno">2.3 </span>Types</a></li><li class="tocline"><a href="#validation-process-overview-1" class="tocxref"><span class="secno">2.4 </span>Validation Process Overview</a></li><li class="tocline"><a href="#summary-of-inferences-and-constraints" class="tocxref"><span class="secno">2.5 </span>Summary of inferences and constraints</a></li></ul></li><li class="tocline"><a href="#compliance" class="tocxref"><span class="secno">3. </span>Compliance with this document</a></li><li class="tocline"><a href="#concepts" class="tocxref"><span class="secno"><span class="insert">4. </span></span><span class="insert">Basic concepts</span></a></li><li class="tocline"><a href="#inferences" class="tocxref"><span class="secno"><span class="delete">4.</span><span class="insert">5.</span> </span>Definitions and Inferences</a><ul class="toc"><li class="tocline"><a href="#optional-identifiers-and-attributes" class="tocxref"><span class="secno"><span class="delete">4.1</span><span class="insert">5.1</span> </span>Optional Identifiers and Attributes</a></li><li class="tocline"><a href="#entities-and-activities" class="tocxref"><span class="secno"><span class="delete">4.2</span><span class="insert">5.2</span> </span>Entities and Activities</a></li><li class="tocline"><a href="#derivations" class="tocxref"><span class="secno"><span class="delete">4.3</span><span class="insert">5.3</span> </span>Derivations</a></li><li class="tocline"><a href="#agents" class="tocxref"><span class="secno"><span class="delete">4.4</span><span class="insert">5.4</span> </span>Agents</a></li><li class="tocline"><a href="#alternate-and-specialized-entities" class="tocxref"><span class="secno"><span class="delete">4.5</span><span class="insert">5.5</span> </span>Alternate and Specialized Entities</a></li></ul></li><li class="tocline"><a href="#constraints" class="tocxref"><span class="secno"><span class="delete">5.</span><span class="insert">6.</span> </span>Constraints</a><ul class="toc"><li class="tocline"><a href="#uniqueness-constraints" class="tocxref"><span class="secno"><span class="delete">5.1</span><span class="insert">6.1</span> </span>Uniqueness Constraints</a></li><li class="tocline"><a href="#event-ordering-constraints" class="tocxref"><span class="secno"><span class="delete">5.2</span><span class="insert">6.2</span> </span>Event Ordering Constraints</a><ul class="toc"><li class="tocline"><a href="#activity-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.1</span><span class="insert">6.2.1</span> </span>Activity constraints</a></li><li class="tocline"><a href="#entity-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.2</span><span class="insert">6.2.2</span> </span> Entity constraints</a></li><li class="tocline"><a href="#agent-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.3</span><span class="insert">6.2.3</span> </span> Agent constraints</a></li></ul></li><li class="tocline"><a href="#type-constraints" class="tocxref"><span class="secno"><span class="delete">5.3</span><span class="insert">6.3</span> </span>Type Constraints</a></li><li class="tocline"><a href="#impossibility-constraints" class="tocxref"><span class="secno"><span class="delete">5.4</span><span class="insert">6.4</span> </span>Impossibility constraints</a></li></ul></li><li class="tocline"><a href="#normalization-validity-equivalence" class="tocxref"><span class="secno"><span class="delete">6.</span><span class="insert">7.</span> </span>Normalization, Validity, and Equivalence</a><ul class="toc"><li class="tocline"><a href="#instances" class="tocxref"><span class="secno"><span class="delete">6.1</span><span class="insert">7.1</span> </span>Instances</a></li><li class="tocline"><a href="#bundle-constraints" class="tocxref"><span class="secno"><span class="delete">6.2</span><span class="insert">7.2</span> </span>Bundles and Documents</a></li></ul></li><li class="tocline"><a href="#glossary" class="tocxref"><span class="secno"><span class="delete">7.</span><span class="insert">8.</span> </span>Glossary</a></li><li class="tocline"><a href="#termination" class="tocxref"><span class="secno">A. </span>Termination of normalization</a></li><li class="tocline"><a href="#changes-since-last-version" class="tocxref"><span class="secno"><span class="insert">B. </span></span><span class="insert">Changes since last version</span></a></li><li class="tocline"><a href="#acknowledgements" class="tocxref"><span class="secno"><span class="delete">B.</span><span class="insert">C.</span> </span>Acknowledgements</a></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno"><span class="delete">C.</span><span class="insert">D.</span> </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno"><span class="delete">C.1</span><span class="insert">D.1</span> </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno"><span class="delete">C.2</span><span class="insert">D.2</span> </span>Informative references</a></li></ul></li></ul></div>
-
-
-
-
-
-
-    <div id="introduction" class="section"> 
+
+
+
+        <p>
+          This document was published by the <a href="http://www.w3.org/2011/prov/">Provenance Working Group</a> as a <span class="delete">Last Call Working Draft. </span><span class="insert">Candidate Recommendation.
+          
+            </span>This document is intended to become a <abbr title="World Wide Web Consortium">W3C</abbr> Recommendation. 
+          
+          If you wish to make comments regarding this document, please send them to  
+          <a href="mailto:[email protected]">[email protected]</a>  
+          (<a href="mailto:[email protected]?subject=subscribe">subscribe</a>, 
+          <a href="http://lists.w3.org/Archives/Public/public-prov-comments/">archives</a>).<span class="delete"> The Last Call period ends 10 October</span>
+          
+          
+            <abbr title="World Wide Web Consortium"><span class="insert">W3C</span></abbr><span class="insert"> publishes a Candidate Recommendation to indicate that the document is believed
+            to be stable and to encourage implementation by the developer community. This
+            Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than
+            31 January</span> 2012. 
+          
+          All feedback is welcome.
+        </p>
+        
+          <p>
+            Publication as a <span class="delete">Working Draft</span><span class="insert">Candidate Recommendation</span> does not imply endorsement by the <abbr title="World Wide Web Consortium">W3C</abbr> 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>
+          
+            This <span class="delete">is</span><span class="insert">document was produced by</span> a <span class="delete">Last Call Working Draft and thus the Working Group has determined that this document has satisfied the relevant technical requirements and is sufficiently stable to advance through the Technical Recommendation process.</span><span class="delete">This document was produced by a </span>group operating under the  
+            <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 <abbr title="World Wide Web Consortium">W3C</abbr> Patent Policy</a>. 
+          
+          
+          
+            
+              <abbr title="World Wide Web Consortium">W3C</abbr> maintains a <a href="http://www.w3.org/2004/01/pp-impl/46974/status" rel="disclosure">public list of any patent disclosures</a>  
+            
+            made in connection with the deliverables of the group; that page also includes instructions for  
+            disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains 
+            <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential Claim(s)</a> must disclose the 
+            information in accordance with <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 
+            6 of the <abbr title="World Wide Web Consortium">W3C</abbr> Patent Policy</a>.
+          
+          
+        </p>
+        
+      
+    
+  
+</section><section id="toc"><h2 class="introductory">Table of Contents</h2><ul class="toc"><li class="tocline"><a href="#introduction" class="tocxref"><span class="secno">1. </span>Introduction<br>
+</a><ul class="toc"><li class="tocline"><a href="#conventions" class="tocxref"><span class="secno">1.1 </span>Conventions</a></li><li class="tocline"><a href="#purpose" class="tocxref"><span class="secno">1.2 </span>Purpose of this document</a></li><li class="tocline"><a href="#structure-of-this-document" class="tocxref"><span class="secno">1.3 </span>Structure of this document</a></li><li class="tocline"><a href="#audience" class="tocxref"><span class="secno">1.4 </span> Audience </a></li></ul></li><li class="tocline"><a href="#rationale" class="tocxref"><span class="secno">2. </span>Rationale</a><ul class="toc"><li class="tocline"><a href="#entities-activities-and-agents" class="tocxref"><span class="secno">2.1 </span>Entities, Activities and Agents</a></li><li class="tocline"><a href="#events" class="tocxref"><span class="secno">2.2 </span>Events</a></li><li class="tocline"><a href="#typing-section" class="tocxref"><span class="secno">2.3 </span>Types</a></li><li class="tocline"><a href="#validation-process-overview-1" class="tocxref"><span class="secno">2.4 </span>Validation Process Overview</a></li><li class="tocline"><a href="#summary-of-inferences-and-constraints" class="tocxref"><span class="secno">2.5 </span>Summary of inferences and constraints</a></li></ul></li><li class="tocline"><a href="#compliance" class="tocxref"><span class="secno">3. </span>Compliance with this document</a></li><li class="tocline"><a href="#concepts" class="tocxref"><span class="secno"><span class="insert">4. </span></span><span class="insert">Basic concepts</span></a></li><li class="tocline"><a href="#inferences" class="tocxref"><span class="secno"><span class="delete">4.</span><span class="insert">5.</span> </span>Definitions and Inferences</a><ul class="toc"><li class="tocline"><a href="#optional-identifiers-and-attributes" class="tocxref"><span class="secno"><span class="delete">4.1</span><span class="insert">5.1</span> </span>Optional Identifiers and Attributes</a></li><li class="tocline"><a href="#entities-and-activities" class="tocxref"><span class="secno"><span class="delete">4.2</span><span class="insert">5.2</span> </span>Entities and Activities</a></li><li class="tocline"><a href="#derivations" class="tocxref"><span class="secno"><span class="delete">4.3</span><span class="insert">5.3</span> </span>Derivations</a></li><li class="tocline"><a href="#agents" class="tocxref"><span class="secno"><span class="delete">4.4</span><span class="insert">5.4</span> </span>Agents</a></li><li class="tocline"><a href="#alternate-and-specialized-entities" class="tocxref"><span class="secno"><span class="delete">4.5</span><span class="insert">5.5</span> </span>Alternate and Specialized Entities</a></li></ul></li><li class="tocline"><a href="#constraints" class="tocxref"><span class="secno"><span class="delete">5.</span><span class="insert">6.</span> </span>Constraints</a><ul class="toc"><li class="tocline"><a href="#uniqueness-constraints" class="tocxref"><span class="secno"><span class="delete">5.1</span><span class="insert">6.1</span> </span>Uniqueness Constraints</a></li><li class="tocline"><a href="#event-ordering-constraints" class="tocxref"><span class="secno"><span class="delete">5.2</span><span class="insert">6.2</span> </span>Event Ordering Constraints</a><ul class="toc"><li class="tocline"><a href="#activity-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.1</span><span class="insert">6.2.1</span> </span>Activity constraints</a></li><li class="tocline"><a href="#entity-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.2</span><span class="insert">6.2.2</span> </span> Entity constraints</a></li><li class="tocline"><a href="#agent-constraints" class="tocxref"><span class="secno"><span class="delete">5.2.3</span><span class="insert">6.2.3</span> </span> Agent constraints</a></li></ul></li><li class="tocline"><a href="#type-constraints" class="tocxref"><span class="secno"><span class="delete">5.3</span><span class="insert">6.3</span> </span>Type Constraints</a></li><li class="tocline"><a href="#impossibility-constraints" class="tocxref"><span class="secno"><span class="delete">5.4</span><span class="insert">6.4</span> </span>Impossibility constraints</a></li></ul></li><li class="tocline"><a href="#normalization-validity-equivalence" class="tocxref"><span class="secno"><span class="delete">6.</span><span class="insert">7.</span> </span>Normalization, Validity, and Equivalence</a><ul class="toc"><li class="tocline"><a href="#instances" class="tocxref"><span class="secno"><span class="delete">6.1</span><span class="insert">7.1</span> </span>Instances</a></li><li class="tocline"><a href="#bundle-constraints" class="tocxref"><span class="secno"><span class="delete">6.2</span><span class="insert">7.2</span> </span>Bundles and Documents</a></li></ul></li><li class="tocline"><a href="#glossary" class="tocxref"><span class="secno"><span class="delete">7.</span><span class="insert">8.</span> </span>Glossary</a></li><li class="tocline"><a href="#termination" class="tocxref"><span class="secno">A. </span>Termination of normalization</a></li><li class="tocline"><a href="#changes-since-last-version" class="tocxref"><span class="secno"><span class="insert">B. </span></span><span class="insert">Changes since last version</span></a></li><li class="tocline"><a href="#acknowledgements" class="tocxref"><span class="secno"><span class="delete">B.</span><span class="insert">C.</span> </span>Acknowledgements</a></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno"><span class="delete">C.</span><span class="insert">D.</span> </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno"><span class="delete">C.1</span><span class="insert">D.1</span> </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno"><span class="delete">C.2</span><span class="insert">D.2</span> </span>Informative references</a></li></ul></li></ul></section>
+
+
+
+
+
+
+    <section id="introduction"> 
       <h2><span class="secno">1. </span>Introduction<br>
 </h2> 
 
 <p>
 Provenance is a record that describes the people, institutions, entities, and activities involved in producing, influencing, or delivering a piece of data or a thing.
 This document complements
-  the PROV-DM specification [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>] that defines a data model for
+  the PROV-DM specification [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>] that defines a data model for
   provenance on the Web.  <span class="insert"> This document defines a form of validation for provenance. </span></p>
 
 
 
-    <div id="conventions" class="section"> 
+    <section id="conventions"> 
 <h3><span class="secno">1.1 </span>Conventions</h3>
 
 
@@ -1133,7 +1278,7 @@
       not">shall
       not</em>", "<em class="rfc2119" title="should">should</em>", "<em class="rfc2119" title="should not">should not</em>", "<em class="rfc2119" title="recommended">recommended</em>",  "<em class="rfc2119" title="may">may</em>", and
       "<em class="rfc2119" title="optional">optional</em>" in this document are to be interpreted as described in
-      [<cite><a class="bibref" rel="biblioentry" href="#bib-RFC2119">RFC2119</a></cite>].</p>
+      [<cite><a class="bibref" href="#bib-RFC2119">RFC2119</a></cite>].</p>
 
 <p>In this document, logical formulas contain variables written as
     lower-case identifiers.  Some of these variables are written
@@ -1141,10 +1286,10 @@
     appear only once in the formula.  Such variables are
     provided merely as an aid to the reader.  </p>
 
-</div>
-
-
-<div id="purpose" class="section">
+</section>
+
+
+<section id="purpose">
 
 <h3><span class="secno">1.2 </span>Purpose of this document</h3>
 
@@ -1156,16 +1301,16 @@
 </span>together with zero or more <a>bundles</a>, or named <span class="delete">sets of
 statements.</span><span class="insert">instances.</span>  For
 example, a PROV document could be a .provn document, the result
-of a query, a triple store containing PROV statements in RDF, etc.<span class="delete">
-A PROV </span><span class="delete">instance</span><span class="delete"> is a set of PROV statements.</span>
-The
-PROV-DM specification [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>] imposes minimal requirements upon
+of a query, a triple store containing PROV statements in RDF, etc.
+<span class="delete">A PROV </span><span class="delete">instance</span><span class="delete"> is a set of PROV statements.
+</span>The
+PROV-DM specification [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>] imposes minimal requirements upon
 PROV instances. A <a href="#dfn-valid" class="internalDFN">valid</a> PROV instance corresponds to a
 consistent history of objects and interactions to which logical
 reasoning can be safely applied. <span class="delete">By default, </span>PROV instances need not
 be <a href="#dfn-valid" class="internalDFN">valid</a>.  <span class="insert">
 The term </span><a href="#dfn-valid" class="internalDFN"><span class="insert">valid</span></a><span class="insert"> is chosen by analogy with
-notions of validity in other </span><acronym title="World Wide Web Consortium"><span class="insert">W3C</span></acronym><span class="insert"> specifications. This
+notions of validity in other </span><abbr title="World Wide Web Consortium"><span class="insert">W3C</span></abbr><span class="insert"> specifications. This
 terminology differs from the usual meaning of "validity" in logic;
 our notion of validity of a PROV instance/document is closer to
 logical "consistency".
@@ -1181,8 +1326,8 @@
 constraints</em>.
 Further discussion
 of the semantics of PROV statements, which justifies the definitions, inferences
-and constraints,<span class="insert"> and relates the procedural specification approach
-taken here to a declarative specification,</span> can be found in the formal semantics [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-SEM">PROV-SEM</a></cite>].
+and constraints, <span class="insert">and relates the procedural specification approach
+taken here to a declarative specification, </span>can be found in the formal semantics [<cite><a class="bibref" href="#bib-PROV-SEM">PROV-SEM</a></cite>].
 </p>
 
 <p>We define validity and equivalence in terms of a
@@ -1224,8 +1369,9 @@
 or digital signing, have good reasons to treat syntactically
 different, but equivalent, documents differently.</span>
 </p>
-</div>
-<div id="structure-of-this-document" class="section">
+
+</section>
+<section id="structure-of-this-document">
 <h3><span class="secno">1.3 </span>Structure of this document</h3>
 
 <p><a href="#rationale">Section 2</a> gives a brief rationale
@@ -1239,7 +1385,7 @@
 <a href="#concepts"><span class="insert">Section 4</span></a><span class="insert"> defines basic concepts used in the
 rest of the specification.  </span></p>
 
-<p> <a href="#inferences">Section <span class="delete">4</span><span class="insert">5</span></a> presents definitions and inferences.  Definitions allow replacing shorthand notation in [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-N">PROV-N</a></cite>]
+<p> <a href="#inferences">Section <span class="delete">4</span><span class="insert">5</span></a> presents definitions and inferences.  Definitions allow replacing shorthand notation in [<cite><a class="bibref" href="#bib-PROV-N">PROV-N</a></cite>]
 with more explicit and complete statements; inferences allow adding
 new facts representing implicit knowledge about the structure of
 provenance.  </p>
@@ -1261,11 +1407,12 @@
 
 
 
-</div>
-<div id="audience" class="section">
+
+</section>
+<section id="audience">
 <h3><span class="secno">1.4 </span> Audience </h3>
 
-<p> The audience for this document is the same as for [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>]: developers
+<p> The audience for this document is the same as for [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>]: developers
 and users who wish to create, process, share or integrate provenance
 records on the (Semantic) Web.  Not all PROV-compliant applications
 need to perform inferences or check validity when processing provenance.
@@ -1274,21 +1421,22 @@
 applications by ruling out nonsensical or inconsistent information.
 </p>
 
-<p>This document assumes familiarity with [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>] and employs the
-[<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-N">PROV-N</a></cite>] notation.
+<p>This document assumes familiarity with [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>] and employs the
+[<cite><a class="bibref" href="#bib-PROV-N">PROV-N</a></cite>] notation.
 </p>
 
-</div>
-</div>
-
-<div id="rationale" class="informative section">
+
+</section>
+</section>
+
+<section id="rationale" class="informative">
 <h2><span class="secno">2. </span>Rationale</h2><p><em>This section is non-normative.</em></p>
 <p> This section gives a high-level rationale that provides some
   further background for the constraints, but does not affect the
 technical content of the rest of the specification.</p>
 
-<div id="entities--activities-and-agents" class="section">
-<h3><span class="secno">2.1 </span>Entities, Activities and Agents</h3>
+<section id="entities-activities-and-agents">
+<h3><span class="secno">2.1 </span>Entities, Activities and Agents</h3><p><em><span class="insert">This section is non-normative.</span></em></p>
 <p>
 One of the central challenges in representing provenance information
 is how to deal with change.  Real-world objects, information objects
@@ -1369,11 +1517,12 @@
 contrast, an activity is something that occurs, happens, unfolds, or
 develops through time.  This
 distinction is similar to the distinction between 'continuant' and
-'occurrent' in logic [<cite><a class="bibref" rel="biblioentry" href="#bib-Logic">Logic</a></cite>].</p>
-
-
-</div>
-<div id="events" class="section">
+'occurrent' in logic [<cite><a class="bibref" href="#bib-Logic">Logic</a></cite>].</p>
+
+
+
+</section>
+<section id="events">
 <h3><span class="secno">2.2 </span>Events</h3>
 
 <p> Although time is important for provenance, provenance can be used
@@ -1389,7 +1538,7 @@
 transitions in the world.  Events include generation, usage, or
 invalidation of entities, as well as start or end of activities.  This
 notion of event is not first-class in the data model, but it is useful
-for explaining its other concepts and its semantics [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-SEM">PROV-SEM</a></cite>].
+for explaining its other concepts and its semantics [<cite><a class="bibref" href="#bib-PROV-SEM">PROV-SEM</a></cite>].
 Thus, events help justify  <i>inferences</i> on provenance as well as
 <i>validity</i> constraints indicating when provenance is
   self-consistent.
@@ -1426,9 +1575,9 @@
 cessation of an entity, after which the entity is  no longer available
 for use.  The entity no longer exists after this event.</p>
 
-</div>
-
-<div id="typing-section" class="section">
+</section>
+
+<section id="typing-section">
 <h3><span class="secno">2.3 </span>Types</h3>
 
 <p> As set out in other specifications, the identifiers used in PROV
@@ -1632,16 +1781,17 @@
  </tbody></table>
     </div>
 
-</div>
-<div id="validation-process-overview-1" class="section">
+
+</section>
+<section id="validation-process-overview-1">
 <h3><span class="secno">2.4 </span>Validation Process Overview</h3>
 
 
     <p>
   This section collects common concepts and operations that are used
   throughout the specification, and relates them to background
-  terminology and ideas from logic [<cite><a class="bibref" rel="biblioentry" href="#bib-Logic">Logic</a></cite>], constraint programming
-  [<cite><a class="bibref" rel="biblioentry" href="#bib-CHR">CHR</a></cite>], and database constraints [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  This section
+  terminology and ideas from logic [<cite><a class="bibref" href="#bib-Logic">Logic</a></cite>], constraint programming
+  [<cite><a class="bibref" href="#bib-CHR">CHR</a></cite>], and database constraints [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  This section
   does not attempt to provide a complete introduction to these topics,
   but it is provided in order to aid readers familiar with one or more
   of these topics in understanding the specification, and to clarify
@@ -1662,21 +1812,21 @@
 implementers, while the procedural approach adopted here immediately demonstrates
 implementability and provides an adequate (polynomial-time) default implementation.  In
 this section we relate the declarative meaning of formulas to their
-procedural meaning.  [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-SEM"><span class="insert">PROV-SEM</span></a></cite><span class="insert">] will provide an alternative,
+procedural meaning.  [</span><cite><a class="bibref" href="#bib-PROV-SEM"><span class="insert">PROV-SEM</span></a></cite><span class="insert">] will provide an alternative,
 declarative characterization of validity and equivalence which could
 be used as a starting point for other implementation strategies.  </span></p>
 
 
  
- <h4 id="constants--variables-and-placeholders">Constants, Variables and Placeholders</h4>
+ <h3 id="constants-variables-and-placeholders">Constants, Variables and Placeholders</h3>
   <p>
   PROV statements involve identifiers, literals, 
-  placeholders, and attribute lists.  Identifiers are, according to PROV-N, expressed as <a href="http://www.w3.org/TR/prov-n/#prod-QUALIFIED_NAME">qualified names</a> which can be mapped to URIs [<cite><a class="bibref" rel="biblioentry" href="#bib-IRI">IRI</a></cite>].
+  placeholders, and attribute lists.  Identifiers are, according to PROV-N, expressed as <a href="http://www.w3.org/TR/prov-n/#prod-QUALIFIED_NAME">qualified names</a> which can be mapped to URIs [<cite><span class="delete">IRI</span><a class="bibref" href="#bib-RFC3987"><span class="insert">RFC3987</span></a></cite>].
   However, in order to specify
   constraints over PROV instances, we also need <em>variables</em>
   that represent unknown identifiers, literals, or placeholders.
   These variables are similar to those in first-order
-  logic [<cite><a class="bibref" rel="biblioentry" href="#bib-Logic">Logic</a></cite>].  A variable is a symbol that can be replaced by
+  logic [<cite><a class="bibref" href="#bib-Logic">Logic</a></cite>].  A variable is a symbol that can be replaced by
   other symbols, including either other variables or constant
   identifiers, literals, or placeholders.  In a few special cases, we
   also use variables for unknown attribute lists. 
@@ -1705,7 +1855,7 @@
 </p>
 
   
- <h4 id="substitution-1">Substitution</h4>
+ <h4 id="substitution-1">Substitution</h4><p><em><span class="insert">This section is non-normative.</span></em></p>
 <p>A <em>substitution</em> is a function that maps variables to terms. Concretely, since we only
   need to consider substitutions of finite sets of variables, we can
   write substitutions as <span class="math">[x<sub>1</sub> = t<sub>1</sub>,...,x<sub>n</sub>=t<sub>n</sub>]</span>.  A substitution
@@ -1762,7 +1912,7 @@
   specification can also be viewed as logical formulas, built up out
   of atomic formulas, logical connectives "and" (∧), "implies" (⇒),
   and quantifiers "for all" (∀) and "there exists" (∃).  For more
-  background on logical formulas, see a logic textbook such as [<cite><a class="bibref" rel="biblioentry" href="#bib-Logic">Logic</a></cite>].</p>
+  background on logical formulas, see a logic textbook such as [<cite><a class="bibref" href="#bib-Logic">Logic</a></cite>].</p>
 <ul>
   <li>
   A definition of the form <span class="name">A</span> <span class="conditional">IF AND ONLY IF</span> there
@@ -1782,7 +1932,7 @@
   </ul>
 
 
- <h4 id="satisfying-definitions--inferences--and-constraints">Satisfying definitions, inferences, and constraints</h4>
+ <h4 id="satisfying-definitions-inferences-and-constraints">Satisfying definitions, inferences, and constraints</h4>
   <p>
   In logic, a formula's meaning is defined by saying when it is
   <em>satisfied</em>.  We can view
@@ -1849,7 +1999,7 @@
 
   
 
- <h4 id="applying-definitions--inferences--and-constraints">Applying definitions, inferences, and constraints</h4>
+ <h4 id="applying-definitions-inferences-and-constraints">Applying definitions, inferences, and constraints</h4>
 <p>Formulas can also be interpreted as having computational
   content.  That is, if an instance does not satisfy a formula, we can
   often <em>apply</em> the formula to the instance to produce another
@@ -1907,8 +2057,8 @@
   The process of applying definitions, inferences, and constraints
   to a PROV instance until all of them are satisfied is similar to
   what is sometimes 
-  called <em>chasing</em> [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>] or <em>saturation</em>
-  [<cite><a class="bibref" rel="biblioentry" href="#bib-CHR">CHR</a></cite>].  We call this process <em>normalization</em>.
+  called <em>chasing</em> [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>] or <em>saturation</em>
+  [<cite><a class="bibref" href="#bib-CHR">CHR</a></cite>].  We call this process <em>normalization</em>.
   </p>
   <p><span class="insert">
   Although this specification outlines one particular way of
@@ -1916,7 +2066,7 @@
   normalization, implementations can use any other equivalent
   algorithm.  The logical formulas corresponding to the definitions,
   inferences, and constraints outlined above (and further elaborated
-  in [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-SEM"><span class="insert">PROV-SEM</span></a></cite><span class="insert">]) provides an equivalent specification, and any
+  in [</span><cite><a class="bibref" href="#bib-PROV-SEM"><span class="insert">PROV-SEM</span></a></cite><span class="insert">]) provides an equivalent specification, and any
   implementation that correctly checks validity and equivalence (whether it performs normalization or not) complies
   with this specification.</span>
   </p>
@@ -1936,7 +2086,7 @@
   guaranteed because the definitions, inferences and uniqueness/key
   constraints correspond to a <em>weakly acyclic</em> set of
   tuple-generating and equality-generating dependencies, in the
-  terminology of [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  The termination of the remaining
+  terminology of [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  The termination of the remaining
   ordering, typing, and impossibility constraints is easy to show.  <a href="#termination">Appendix
   <span class="delete">C</span><span class="insert">A</span></a> gives a proof that the definitions, inferences, and uniqueness
   and key constraints are weakly acyclic and therefore terminating.
@@ -1977,7 +2127,7 @@
 
 
 <div style="text-align: center;">
-<span class="figure">
+<span class="figure" id="fig-figure-1-overview-of-the-validation-process">
 <img src="images/constraints/prov-c.graffle.svg/overview.svg" alt="validation process overview">
 <br>
 <span class="figcaption" id="validation-process-overview">Figure 1<sup><a class="internalDFN" href="#validation-process-overview"><span class="diamond"> ◊:</span></a></sup> Overview of the Validation Process</span>
@@ -1985,7 +2135,7 @@
 </div>
 
 
- <h4 id="checking-ordering--typing--and-impossibility-constraints">Checking ordering, typing, and impossibility constraints</h4>
+ <h4 id="checking-ordering-typing-and-impossibility-constraints">Checking ordering, typing, and impossibility constraints</h4>
   <p>
   The ordering, typing, and impossibility constraints are checked
   rather than applied.  This means that they do not generate new
@@ -2133,9 +2283,9 @@
 property than requiring that there be a single isomorphism that works
 for all of the corresponding instances.
 </p>
-</div>
-
-<div id="summary-of-inferences-and-constraints" class="section">
+</section>
+
+<section id="summary-of-inferences-and-constraints">
 <h3><span class="secno">2.5 </span>Summary of inferences and constraints</h3>
 
 <p><a href="">Table 2</a> summarizes the inferences, and
@@ -2357,12 +2507,12 @@
 
 <tr class="component4-color">
 	<td><a title="bundle">Bundle constructor</a></td>
-	<td>No specific constraints; see <a href="#bundle-constraints" class="sectionRef">section <span class="delete">6.2</span><span class="insert">7.2</span> Bundles and Documents</a></td>
+	<td>No specific constraints; see <a href="#bundle-constraints" class="sectionRef sec-ref">section <span class="delete">6.2</span><span class="insert">7.2</span> Bundles and Documents</a></td>
 	<td rowspan="2" style="text-align: center; "><a href="http://www.w3.org/TR/prov-dm/#component4" title="Component 4: Bundles">4</a></td>
 </tr>
 <tr class="component4-color">
 	<td class="provType"><a title="bundle">Bundle type</a></td>
-	<td> No specific constraints; see <a href="#bundle-constraints" class="sectionRef">section <span class="delete">6.2</span><span class="insert">7.2</span> Bundles and Documents</a>
+	<td> No specific constraints; see <a href="#bundle-constraints" class="sectionRef sec-ref">section <span class="delete">6.2</span><span class="insert">7.2</span> Bundles and Documents</a>
         </td>
 </tr>
 <tr><td style="border-width: 0px; "></td><td style="border-width: 0px; "></td><td style="border-width: 0px; "></td></tr>
@@ -2413,35 +2563,35 @@
 </div>
 
   
-</div>
-
-</div>
-
-<div id="compliance" class="section">
+</section>
+
+</section>
+
+<section id="compliance">
 <h2><span class="secno">3. </span>Compliance with this document</h2>
 
 <p>
   For the purpose of compliance, the normative sections of this document
-  are <a href="#compliance" class="sectionRef">section 3. Compliance with this document</a>, 
-<a href="#concepts" class="sectionRef"><span class="insert">section 4. Basic concepts</span></a><span class="insert">,
-</span><a href="#inferences" class="sectionRef">section <span class="delete">4.</span><span class="insert">5.</span> Definitions and Inferences</a>, 
-<a href="#constraints" class="sectionRef">section <span class="delete">5.</span><span class="insert">6.</span> Constraints</a>, and 
-<a href="#normalization-validity-equivalence" class="sectionRef">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>.  
+  are <a href="#compliance" class="sectionRef sec-ref">section 3. Compliance with this document</a>, 
+<a href="#concepts" class="sectionRef sec-ref">section 4. <span class="insert">Basic concepts</span></a><span class="insert">,
+</span><a href="#inferences" class="sectionRef sec-ref"><span class="insert">section 5. </span>Definitions and Inferences</a>, 
+<a href="#constraints" class="sectionRef sec-ref">section <span class="delete">5.</span><span class="insert">6.</span> Constraints</a>, and 
+<a href="#normalization-validity-equivalence" class="sectionRef sec-ref">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>.  
 
 
  To be compliant:
   </p><ol><li>When processing provenance, an
-    application <em class="rfc2119" title="may">may</em> apply the inferences and definitions in <a href="#inferences" class="sectionRef">section <span class="delete">4.</span><span class="insert">5.</span> Definitions and Inferences</a>.</li>
+    application <em class="rfc2119" title="may">may</em> apply the inferences and definitions in <a href="#inferences" class="sectionRef sec-ref">section <span class="delete">4.</span><span class="insert">5.</span> Definitions and Inferences</a>.</li>
    <li>If determining whether a PROV instance or document is <a href="#dfn-valid" class="internalDFN">valid</a>, an
     application <em class="rfc2119" title="must">must</em> <span class="delete">check that</span><span class="insert">determine whether</span> all of the
-    constraints of <a href="#constraints" class="sectionRef">section <span class="delete">5.</span><span class="insert">6.</span> Constraints</a> are
+    constraints of <a href="#constraints" class="sectionRef sec-ref">section <span class="delete">5.</span><span class="insert">6.</span> Constraints</a> are
   satisfied   on 
   the <a href="#dfn-normal-form" class="internalDFN">normal form</a> of the instance or document.  </li>
    <li> If producing provenance meant for other applications to
-    use, the application <em class="rfc2119" title="should">should</em> produce <a href="#dfn-valid" class="internalDFN">valid</a> provenance, as specified in <a href="#normalization-validity-equivalence" class="sectionRef">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>. </li>
+    use, the application <em class="rfc2119" title="should">should</em> produce <a href="#dfn-valid" class="internalDFN">valid</a> provenance, as specified in <a href="#normalization-validity-equivalence" class="sectionRef sec-ref">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>. </li>
     <li>If determining whether two PROV instances or documents are
   <a href="#dfn-equivalent" class="internalDFN">equivalent</a>, an application <em class="rfc2119" title="must">must</em> determine whether their
-  normal forms are equal, as specified in <a href="#normalization-validity-equivalence" class="sectionRef">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>.
+  normal forms are equal, as specified in <a href="#normalization-validity-equivalence" class="sectionRef sec-ref">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>.
   </li></ol>
 
   <p><span class="delete">Compliant </span><span class="insert">This specification defines validity and equivalence procedurally
@@ -2469,14 +2619,14 @@
 
 
 
-</div>
+
 
  
 
 
-
-
- <div id="concepts" class="section">
+</section>
+
+ <section id="concepts">
   <h2><span class="secno">4. </span><span class="insert">Basic concepts</span></h2>
 
   <p><span class="insert">This section specifies the key concepts of terms, statements, instances, substitution,
@@ -2486,7 +2636,7 @@
 
   <p><span class="insert">Many PROV relation statements have an identifier, identifying a
   link between two or more related objects.  Identifiers can sometimes
-  be omitted in [</span><cite><a class="bibref" rel="biblioentry" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">] notation.  For the purpose of inference and
+  be omitted in [</span><cite><a class="bibref" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">] notation.  For the purpose of inference and
   validity checking, we generate special identifiers called
   </span><dfn id="dfn-variables"><span class="insert">variables</span></dfn><span class="insert"> denoting the unknown values.
   Generally, identifiers occurring in constraints and inferences are
@@ -2580,13 +2730,13 @@
   </span><span class="math"><span class="insert">S(I) = I'</span></span><span class="insert">.</span></p>
 
 
-</div>
-<div id="inferences" class="section">
+</section>
+<section id="inferences">
 <h2><span class="secno"><span class="insert">5. </span></span>Definitions and Inferences</h2>
 <p>
 This section  describes <a title="definition" href="#definition" class="internalDFN">definitions</a> and <a title="inference" href="#inference" class="internalDFN">inferences</a> that <em class="rfc2119" title="may">may</em> be used on
   provenance data, and <span class="insert">that </span>preserve <a>equivalence</a> on <a href="#dfn-valid" class="internalDFN">valid</a>
-PROV instances (as detailed in <a href="#normalization-validity-equivalence" class="sectionRef">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>).
+PROV instances (as detailed in <a href="#normalization-validity-equivalence" class="sectionRef sec-ref">section <span class="delete">6.</span><span class="insert">7.</span> Normalization, Validity, and Equivalence</a>).
 A <dfn id="definition">definition</dfn> is a rule that can be applied to
   PROV instances to replace defined <span class="delete">expressions</span><span class="insert">statements</span> with <span class="delete">definitions.</span><span class="insert">other statements.</span> An  <dfn id="inference">inference</dfn> is a rule that can be applied
   to PROV instances to add new PROV statements.  A definition states that a
@@ -2644,18 +2794,19 @@
   generating fresh identifiers <span class="name">a<sub>1</sub></span>,...,<span class="name">a<sub>m</sub></span> for the existential variables.  These fresh
   identifiers might later be found to be equal to known identifiers;
   they play a similar role in PROV constraints to existential
-  variables in <span class="delete">logic, to "labeled nulls" in</span><span class="insert">logic [</span><cite><a class="bibref" rel="biblioentry" href="#bib-Logic"><span class="insert">Logic</span></a></cite><span class="insert">] or</span> database theory
-  [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite><span class="delete">],  or</span><span class="insert">].
+  variables in <span class="delete">logic, to "labeled nulls" in database theory
+  </span><span class="insert">logic </span>[<cite><span class="delete">DBCONSTRAINTS</span><a class="bibref" href="#bib-Logic"><span class="insert">Logic</span></a></cite><span class="delete">],  </span><span class="insert">] </span>or <span class="delete">to blank nodes in </span><span class="insert">database theory
+  </span>[<cite><span class="delete">RDF</span><a class="bibref" href="#bib-DBCONSTRAINTS"><span class="insert">DBCONSTRAINTS</span></a></cite><span class="insert">].
   
-  In general, omitted optional parameters</span> to<span class="delete"> blank nodes in </span>
-  [<cite><span class="delete">RDF</span><a class="bibref" rel="biblioentry" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">] statements, or explicit </span><span class="name"><span class="insert">-</span></span><span class="insert">
+  In general, omitted optional parameters to
+  [</span><cite><a class="bibref" href="#bib-PROV-N"><span class="insert">PROV-N</span></a></cite><span class="insert">] statements, or explicit </span><span class="name"><span class="insert">-</span></span><span class="insert">
   markers, are placeholders for existentially quantified variables;
   that is, they denote unknown values.  There are a few exceptions to
   this general rule, which are specified in </span><a class="rule-ref" href="#optional-placeholders"><span><span class="insert">Definition 4 (optional-placeholders)</span></span></a><span class="insert">.</span></p>
 
 <p><span class="insert"> Definitions and inferences can be viewed as logical formulas;
-  similar formalisms are often used in rule-based reasoning [</span><cite><a class="bibref" rel="biblioentry" href="#bib-CHR"><span class="insert">CHR</span></a></cite><span class="insert">]
-  and in databases [</span><cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS"><span class="insert">DBCONSTRAINTS</span></a></cite>].  In <span class="delete">general, omitted optional parameters to
+  similar formalisms are often used in rule-based reasoning [</span><cite><a class="bibref" href="#bib-CHR"><span class="insert">CHR</span></a></cite><span class="insert">]
+  and in databases [</span><cite><a class="bibref" href="#bib-DBCONSTRAINTS"><span class="insert">DBCONSTRAINTS</span></a></cite>].  In <span class="delete">general, omitted optional parameters to
   [</span><span class="delete">PROV-N</span><span class="delete">] statements, or explicit </span><span class="delete">-</span><span class="delete">
   markers, are placeholders for existentially quantified variables;
   that is, they denote unknown values.  There are a few exceptions to
@@ -2686,7 +2837,7 @@
 	as an ordered list, the scope of the variables in each rule is at the level of list elements, and so reuse of 
 	variable names in different rules does not affect the meaning.
 </p>
-<div id="optional-identifiers-and-attributes" class="section">
+<section id="optional-identifiers-and-attributes">
   <h3><span class="secno"><span class="delete">4.1</span><span class="insert">5.1</span> </span>Optional Identifiers and Attributes</h3>
 
   <span class="delete">Many PROV relation statements have an identifier, identifying a
@@ -2825,7 +2976,7 @@
 
 
 <p id="optional-placeholders_text">Finally,  most optional parameters (written <span class="name">-</span>) are, for the purpose of this document,
-  considered to be distinct, fresh existential variables.  Optional parameters are defined in  [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>] and in [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-N">PROV-N</a></cite>] for each type of PROV statement.
+  considered to be distinct, fresh existential variables.  Optional parameters are defined in  [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>] and in [<cite><a class="bibref" href="#bib-PROV-N">PROV-N</a></cite>] for each type of PROV statement.
   Thus,
   before proceeding to apply other definitions or inferences, most
   occurrences of <span class="name">-</span> are to be replaced
@@ -2980,9 +3131,9 @@
 
  <p>Let us consider a system, in which a derivation is underpinned by multiple activities. Conceptually, one could also model such a system with a new activity that encompasses the two original activities and underpins the derivation.   The inferences defined in this specification do not allow the latter modelling to be inferred from the former. Hence, the two  modellings of the same system are regarded as different in the context of this specification.</p>
     </div>
-</div>
+</section>
     
-<div id="entities-and-activities" class="section">
+<section id="entities-and-activities">
   <h3><span class="secno"><span class="delete">4.2</span><span class="insert">5.2</span> </span>Entities and Activities</h3>
 
 
@@ -3031,7 +3182,7 @@
     information) it is impossible for <span class="name">a3</span> to have used an entity generated by <span class="name">a1</span>. This is illustrated in <a href="#counterexample-wasInformedBy">Figure 2</a>.</p>
 
 <div style="text-align: center;">
-<span class="figure">
+<span class="figure" id="fig-figure-2-counter-example-for-transitivity-of-wasinformedby">
 <img src="images/constraints/informedByNonTransitive.png" alt="non transitivity of wasInformedBy">
 <br>
 <span class="figcaption" id="counterexample-wasInformedBy">Figure 2<sup><a class="internalDFN" href="#counterexample-wasInformedBy"><span class="diamond"> ◊:</span></a></sup> Counter-example for transitivity of wasInformedBy</span>
@@ -3107,9 +3258,9 @@
 
 
 
-</div>
-
- <div id="derivations" class="section"> 
+</section>
+
+ <section id="derivations"> 
 <h3><span class="secno"><span class="delete">4.3</span><span class="insert">5.3</span> </span>Derivations</h3>
 
 
@@ -3149,10 +3300,10 @@
   There is no inference stating that <span class="name">wasDerivedFrom</span> is
   transitive.  
   </div>
-</div>
-
-
-<div id="agents" class="section">
+</section>
+
+
+<section id="agents">
 <h3><span class="secno"><span class="delete">4.4</span><span class="insert">5.4</span> </span>Agents</h3>
 
 <p id="attribution-inference_text"> Attribution is the ascribing of an entity to an agent.  An
@@ -3184,7 +3335,7 @@
   merged </span><span class="insert"> unified
 </span>with a constant identifier, another existential variable, or a
   placeholder <span class="name">-</span>, as explained
-  in the definition of <span class="delete">merging</span><a href="#dfn-unification" class="internalDFN"><span class="insert">unification</span></a>.
+  in the definition of <span class="delete">merging</span><a><span class="insert">unification</span></a>.
   </div>
 <hr>
 <p id="delegation-inference_text"> Delegation relates agents where one agent acts on behalf of
@@ -3214,7 +3365,7 @@
   <span class="name">_pl1</span> and <span class="name">_pl2</span>
   can be replaced with constant identifiers, existential variables, or
   placeholders <span class="name">-</span> independently, as explained
-  in the definition of <span class="delete">merging</span><a href="#dfn-unification" class="internalDFN"><span class="insert">unification</span></a>.
+  in the definition of <span class="delete">merging</span><a><span class="insert">unification</span></a>.
   </div>
 
 <hr>
@@ -3268,11 +3419,11 @@
   specific relationship.
 </div>
 
-</div>
-
-
-
- <div id="alternate-and-specialized-entities" class="section"> 
+</section>
+
+
+
+ <section id="alternate-and-specialized-entities"> 
 <h3><span class="secno"><span class="delete">4.5</span><span class="insert">5.5</span> </span>Alternate and Specialized Entities</h3>
 
 
@@ -3378,17 +3529,17 @@
 
   
 
-</div>
-
-
-
-
-
-</div>
-
-
-
-<div id="constraints" class="section">
+</section>
+
+
+
+
+
+</section>
+
+
+
+<section id="constraints">
 <h2><span class="secno"><span class="delete">5.</span><span class="insert">6.</span> </span>Constraints</h2>
 
 
@@ -3423,7 +3574,7 @@
 	as an ordered list, the scope of the variables in each rule is at the level of list elements, and so reuse of 
 	variable names in different rules does not affect the meaning.
 </p>
-  <div id="uniqueness-constraints" class="section">
+  <section id="uniqueness-constraints">
 
 
  
@@ -3764,9 +3915,9 @@
 
 
 
-</div>  
-
-<div id="event-ordering-constraints" class="section">
+</section>  
+
+<section id="event-ordering-constraints">
 <h3><span class="secno"><span class="delete">5.2</span><span class="insert">6.2</span> </span>Event Ordering Constraints</h3>
 
 
@@ -3784,7 +3935,7 @@
 
 
 <p>To allow for minimalistic clock assumptions, like Lamport
-[<cite><a class="bibref" rel="biblioentry" href="#bib-CLOCK">CLOCK</a></cite>], PROV relies on a notion of relative ordering of <a title="instantaneous event" href="#dfn-event" class="internalDFN">instantaneous events</a>,
+[<cite><a class="bibref" href="#bib-CLOCK">CLOCK</a></cite>], PROV relies on a notion of relative ordering of <a title="instantaneous event" href="#dfn-event" class="internalDFN">instantaneous events</a>,
 without using physical clocks. This specification assumes that a <a href="#dfn-preorder" class="internalDFN">preorder</a> exists between <a title="instantaneous event" href="#dfn-event" class="internalDFN">instantaneous events</a>.
 </p>
 
@@ -3839,7 +3990,7 @@
 
 
 
-<div id="activity-constraints" class="section">
+<section id="activity-constraints">
 <h4><span class="secno"><span class="delete">5.2.1</span><span class="insert">6.2.1</span> </span>Activity constraints</h4>
 
 <p>
@@ -3854,7 +4005,7 @@
 start and endpoints of its lifetime.
 </p>
 
-<p><a href="#ordering-activity">Figure 3</a> summarizes the ordering
+<p><a href="#ordering-activity" class="fig-ref">Figure 3</a> summarizes the ordering
   constraints on activities in a
 graphical manner. For this and subsequent figures, an event time line points to the
 right. Activities are represented by rectangles, whereas entities are
@@ -3893,7 +4044,7 @@
 The existence of an activity implies that the <a href="#dfn-start-event" class="internalDFN">activity start
 event</a> always <a href="#dfn-precedes" class="internalDFN">precedes</a> the corresponding <a href="#dfn-end-event" class="internalDFN">activity end
 event</a>.  This is illustrated by
-<a href="#ordering-activity">Figure 3</a>
+<a href="#ordering-activity" class="fig-ref">Figure 3</a>
 (a) and expressed by <a class="rule-ref" href="#start-precedes-end"><span>Constraint <span class="delete">32</span><span class="insert">30</span> (start-precedes-end)</span></a>.</p>
 
 <div class="constraint" id="start-precedes-end"><div class="ruleTitle"><a class="internalDFN" href="#start-precedes-end">Constraint <span class="delete">32</span><span class="insert">30</span> (start-precedes-end)</a></div>
@@ -3957,7 +4108,7 @@
 <hr>
 
 <p id="usage-within-activity_text">A usage implies ordering of <a title="instantaneous event" href="#dfn-event" class="internalDFN">events</a>, since the <a title="entity usage event" href="#dfn-usage-event" class="internalDFN">usage event</a> had to occur during the associated activity. This is
-illustrated by <a href="#ordering-activity">Figure 3</a> (b) and  expressed by <a class="rule-ref" href="#usage-within-activity"><span>Constraint <span class="delete">35</span><span class="insert">33</span> (usage-within-activity)</span></a>.</p>
+illustrated by <a href="#ordering-activity" class="fig-ref">Figure 3</a> (b) and  expressed by <a class="rule-ref" href="#usage-within-activity"><span>Constraint <span class="delete">35</span><span class="insert">33</span> (usage-within-activity)</span></a>.</p>
 
 <div class="constraint" id="usage-within-activity"><div class="ruleTitle"><a class="internalDFN" href="#usage-within-activity">Constraint <span class="delete">35</span><span class="insert">33</span> (usage-within-activity)</a></div>
 <ol>
@@ -3990,7 +4141,7 @@
 
 
 <p id="generation-within-activity_text">A generation implies ordering of <a title="instantaneous event" href="#dfn-event" class="internalDFN">events</a>, since the <a title="entity generation event" href="#dfn-generation-event" class="internalDFN">generation event</a> had to occur during the associated activity. This is
-illustrated by <a href="#ordering-activity">Figure 3</a> (c) and  expressed by <a class="rule-ref" href="#generation-within-activity"><span>Constraint <span class="delete">36</span><span class="insert">34</span> (generation-within-activity)</span></a>.</p> 
+illustrated by <a href="#ordering-activity" class="fig-ref">Figure 3</a> (c) and  expressed by <a class="rule-ref" href="#generation-within-activity"><span>Constraint <span class="delete">36</span><span class="insert">34</span> (generation-within-activity)</span></a>.</p> 
 
 <div class="constraint" id="generation-within-activity"><div class="ruleTitle"><a class="internalDFN" href="#generation-within-activity">Constraint <span class="delete">36</span><span class="insert">34</span> (generation-within-activity)</a></div>
    <ol>
@@ -4028,7 +4179,7 @@
 implies that the start event of <span class="name">a1</span> cannot
 follow the end event of <span class="name">a2</span>. This is
 illustrated by
-<a href="#ordering-activity">Figure 3</a>
+<a href="#ordering-activity" class="fig-ref">Figure 3</a>
 (d) and expressed by <a class="rule-ref" href="#wasInformedBy-ordering"><span>Constraint <span class="delete">37</span><span class="insert">35</span> (wasInformedBy-ordering)</span></a>.</p>
 
 <div class="constraint" id="wasInformedBy-ordering"><div class="ruleTitle"><a class="internalDFN" href="#wasInformedBy-ordering">Constraint <span class="delete">37</span><span class="insert">35</span> (wasInformedBy-ordering)</a></div>
@@ -4049,25 +4200,29 @@
 
 
 
-</p></div>
-
-<div id="entity-constraints" class="section">
+</p></section>
+
+<section id="entity-constraints">
 <h4><span class="secno"><span class="delete">5.2.2</span><span class="insert">6.2.2</span> </span> Entity constraints</h4>
 
 
-<span class="delete">The figure(s) in this section should have vertical lines with visual styles that match the diagonal arrow that they go with. </span>
-
-
-
-
-
-
-<p>
+
+
+
+
+
+<p><span class="insert">
+As with activities, entities have lifetimes: they are generated, then
+can be used, other entities can be derived from them, and finally they
+can be invalidated. </span>The <span class="delete">figure(s)</span><span class="insert">constraints on these events are
+illustrated graphically</span> in <span class="delete">this section should have vertical lines with visual styles that match the diagonal arrow that they go with. </span>
+
+<span class="delete">
 As with activities, entities have lifetimes: they are generated, then
 can be used, other entities can be derived from them, and finally they
 can be invalidated. The constraints on these events are
-illustrated graphically in <a href="#ordering-entity">Figure 4</a> and
-<a href="#ordering-entity-trigger">Figure 5</a>.
+illustrated graphically in </span><a href="#ordering-entity" class="fig-ref">Figure 4</a> and
+<a href="#ordering-entity-trigger" class="fig-ref">Figure 5</a>.
 </p>
 
 
@@ -4110,7 +4265,7 @@
 <p id="generation-precedes-usage_text"> 
 A usage and a generation for a given entity implies ordering of <a title="instantaneous event" href="#dfn-event" class="internalDFN">events</a>, since the <a title="entity generation
 event" href="#dfn-generation-event" class="internalDFN">generation event</a> had to precede the <a title="entity usage event" href="#dfn-usage-event" class="internalDFN">usage event</a>. This is
-illustrated by <a href="#ordering-entity">Figure 4</a>(a) and  expressed by <a class="rule-ref" href="#generation-precedes-usage"><span>Constraint <span class="delete">39</span><span class="insert">37</span> (generation-precedes-usage)</span></a>.</p>
+illustrated by <a href="#ordering-entity" class="fig-ref">Figure 4</a>(a) and  expressed by <a class="rule-ref" href="#generation-precedes-usage"><span>Constraint <span class="delete">39</span><span class="insert">37</span> (generation-precedes-usage)</span></a>.</p>
 
 <div class="constraint" id="generation-precedes-usage"><div class="ruleTitle"><a class="internalDFN" href="#generation-precedes-usage">Constraint <span class="delete">39</span><span class="insert">37</span> (generation-precedes-usage)</a></div>
 <p>  <span class="conditional">IF</span>
@@ -4239,7 +4394,7 @@
 <div class="remark">
   <p>This constraint requires the derived
     entity to be generated strictly following the generation of the
-    original entity. This follows from the [<cite><a class="bibref" rel="biblioentry" href="#bib-PROV-DM">PROV-DM</a></cite>] definition of
+    original entity. This follows from the [<cite><a class="bibref" href="#bib-PROV-DM">PROV-DM</a></cite>] definition of
     derivation: <em>A derivation is a transformation of an entity into
     another, an update of an entity resulting in a new one, or the
     construction of a new entity based on a pre-existing entity</em>, thus
@@ -4255,7 +4410,7 @@
 <p id="wasStartedBy-ordering_text">
 The entity that triggered the start of an activity must exist before the activity starts.
 This is
-illustrated by <a href="#ordering-entity-trigger">Figure 5</a>(a) and  expressed by <a class="rule-ref" href="#wasStartedBy-ordering"><span>Constraint <span class="delete">45</span><span class="insert">43</span> (wasStartedBy-ordering)</span></a>.</p>
+illustrated by <a href="#ordering-entity-trigger" class="fig-ref">Figure 5</a>(a) and  expressed by <a class="rule-ref" href="#wasStartedBy-ordering"><span>Constraint <span class="delete">45</span><span class="insert">43</span> (wasStartedBy-ordering)</span></a>.</p>
 
 
 <div class="constraint" id="wasStartedBy-ordering"><div class="ruleTitle"><a class="internalDFN" href="#wasStartedBy-ordering">Constraint <span class="delete">45</span><span class="insert">43</span> (wasStartedBy-ordering)</a></div>
@@ -4287,7 +4442,7 @@
 <p id="wasEndedBy-ordering_text"> Similarly, the entity that triggered
 the end of an activity must exist before the activity ends, as
 illustrated by
-<a href="#ordering-entity-trigger">Figure 5</a>(b).</p>
+<a href="#ordering-entity-trigger" class="fig-ref">Figure 5</a>(b).</p>
 
 
 <div class="constraint" id="wasEndedBy-ordering"><div class="ruleTitle"><a class="internalDFN" href="#wasEndedBy-ordering">Constraint <span class="delete">46</span><span class="insert">44</span> (wasEndedBy-ordering)</a></div>
@@ -4352,9 +4507,9 @@
 </p>
   </div>
 
-</div>
-
-<div id="agent-constraints" class="section">
+</section>
+
+<section id="agent-constraints">
 <h4><span class="secno"><span class="delete">5.2.3</span><span class="insert">6.2.3</span> </span> Agent constraints</h4>
 
 <p> Like entities and activities, agents have lifetimes that follow a
@@ -4511,13 +4666,13 @@
 
 </div>
 
-</div>
-
-</div>  
-
-
-
-<div id="type-constraints" class="section">
+</section>
+
+</section>  
+
+
+
+<section id="type-constraints">
 <h3><span class="secno"><span class="delete">5.3</span><span class="insert">6.3</span> </span>Type Constraints</h3>
 
 <p id="typing_text">The following <span class="delete">rule  establishes</span><span class="insert">rules assign</span> types <span class="delete">denoted by</span><span class="insert">to</span> identifiers<span class="delete"> from</span><span class="insert">
@@ -4737,9 +4892,9 @@
 </li></ol>
 </div>
 
-</div> 
-
-<div id="impossibility-constraints" class="section">
+</section> 
+
+<section id="impossibility-constraints">
 <h3><span class="secno"><span class="delete">5.4</span><span class="insert">6.4</span> </span>Impossibility constraints</h3>
 
 <p> Impossibility constraints require that certain patterns of
@@ -4905,12 +5060,12 @@
 
 
  
-</div> 
-
-
-</div> 
-
-  <div id="normalization-validity-equivalence" class="section">
+</section> 
+
+
+</section> 
+
+  <section id="normalization-validity-equivalence">
 <h2><span class="secno"><span class="delete">6.</span><span class="insert">7.</span> </span>Normalization, Validity, and Equivalence</h2>
 
 
@@ -4918,7 +5073,7 @@
 <a title="equivalence">equivalence</a> of PROV documents and instances.  We first define these concepts
 for PROV instances and then extend them to PROV documents.</p>
 
-<div id="instances" class="section">
+<section id="instances">
   <h3><span class="secno"><span class="delete">6.1</span><span class="insert">7.1</span> </span>Instances</h3>
   
 <div class="remark">
@@ -4971,7 +5126,7 @@
   dependencies</a> and <a>equality-generating dependencies</a> that
   satisfy a termination condition called <a>weak acyclicity</a> that
   has been studied in the context of relational databases
-  [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  Therefore, the above algorithm terminates, independently
+  [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>].  Therefore, the above algorithm terminates, independently
   of the order in which inferences and constraints are applied.
   <a href="#termination">Appendix <span class="delete">C</span><span class="insert">A</span></a> gives a proof that normalization terminates and produces
   a unique (up to isomorphism) normal form.
@@ -5059,12 +5214,12 @@
   <li>
   Applying inference rules, definitions, and uniqueness constraints preserves equivalence.  That is, a <a href="#instance" class="internalDFN">PROV
   instance</a> is equivalent to the instance obtained by applying any
-  inference rule or definition, or by <a title="unification" href="#dfn-unification" class="internalDFN"><span class="insert">unifying</span></a><span class="insert"> two terms or</span> <a href="#dfn-merging" class="internalDFN">merging</a> two statements to
+  inference rule or definition, or by <a title="unification"><span class="insert">unifying</span></a><span class="insert"> two terms or</span> <a href="#dfn-merging" class="internalDFN">merging</a> two statements to
   enforce a uniqueness constraint.
   </li>
   <li>Equivalence is <a href="#dfn-reflexive" class="internalDFN">reflexive</a>, <a href="#dfn-symmetric" class="internalDFN">symmetric</a>, and 
   <a href="#dfn-transitive" class="internalDFN">transitive</a>.<span class="insert">  (This is because a valid instance has a unique
-  normal form up to isomorphism [</span><cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS"><span class="insert">DBCONSTRAINTS</span></a></cite><span class="insert">]). </span></li>
+  normal form up to isomorphism [</span><cite><a class="bibref" href="#bib-DBCONSTRAINTS"><span class="insert">DBCONSTRAINTS</span></a></cite><span class="insert">]). </span></li>
 </ul>
 
 <p> An application that processes PROV data <em class="rfc2119" title="should">should</em> handle
@@ -5076,9 +5231,9 @@
 provenance, where the</span> order <span class="insert">and syntactic form </span>of statements <span class="delete">in a file and avoid expanding
 inferences.)</span><span class="insert">matters.</span>  </p>
 
-</div>
-
-<div id="bundle-constraints" class="section">
+</section>
+
+<section id="bundle-constraints">
 <h3><span class="secno"><span class="delete">6.2</span><span class="insert">7.2</span> </span>Bundles and Documents</h3>
 
 
@@ -5135,22 +5290,22 @@
 b'<sub>P(i)</sub></span> and <span class="name"><span class="delete">B</span><span class="insert">I</span><sub>i</sub></span> is equivalent to <span class="name"><span class="delete">B'</span><span class="insert">I'</span><sub>P(i)</sub></span>.
 </p>
 
-</div> 
-
-
-</div> 
-
-
-
-
-
-
-
-
-
-
-
-<div class="glossary section" id="glossary"> 
+</section> 
+
+
+</section> 
+
+
+
+
+
+
+
+
+
+
+
+<section class="glossary" id="glossary"> 
       <h2><span class="secno"><span class="delete">7.</span><span class="insert">8.</span> </span>Glossary</h2>
 
       <ul> 
@@ -5185,10 +5340,10 @@
      
      
       </ul> 
-    </div> 
-
-
-      <div class="appendix informative section" id="termination">
+    </section> 
+
+
+      <section class="appendix informative" id="termination">
       <h2><span class="secno">A. </span>Termination of normalization</h2><p><em>This section is non-normative.</em></p>
 
       <p>
@@ -5211,7 +5366,7 @@
 
       <p><b>Termination for instances without attributes.</b>  For
       these instances, uniqueness and key constraints can be
-      As shown in [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>], termination of normalization can be
+      As shown in [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>], termination of normalization can be
       shown by checking that the inference rules are <em>weakly
       acyclic</em>.  In addition, weak acyclicity can be checked
       in a modular fashion for our system, because there are only a few possible
@@ -5283,7 +5438,7 @@
       involved, so they are weakly acyclic.
        </li>
        <li>For stage 6, we check weak acyclicity using the algorithm
-      in       [<cite><a class="bibref" rel="biblioentry" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>], namely:
+      in       [<cite><a class="bibref" href="#bib-DBCONSTRAINTS">DBCONSTRAINTS</a></cite>], namely:
        <ul><li> Given a formula <span class="math">φ(x<sub>1</sub>,...,x<sub>n</sub>) ⇒
       ∃y<sub>1</sub>,...,y<sub>m</sub>. ψ(x<sub>1</sub>,...,x<sub>n</sub>,y<sub>1</sub>,...,y<sub>m</sub>)</span></li>
       <li>For every <span class="math">x</span> that occurs in  <span class="math">ψ</span>, and for every
@@ -5329,10 +5484,10 @@
        lead to an infinite sequence of translated normalization steps
        on instances with explicit attributes.
        </p>
-</div>
-
-<div class="appendix section" id="changes-since-last-version"> 
-      <h2><span class="secno"><span class="insert">B. </span></span><span class="insert">Changes since last version</span></h2> 
+</section>
+
+<section class="appendix" id="changes-since-last-version"> 
+      <h2><span class="secno">B. </span><span class="insert">Changes since last version</span></h2> 
     <p><span class="insert">   Please see the </span><a href="http://www.w3.org/2011/prov/wiki/ResponsesToPublicComments"><span class="insert">
       Responses to Public Comments on the Last Call Working Draft</span></a><span class="insert">
       for more details about the justification of these changes.</span></p>
@@ -5388,13 +5543,13 @@
   <li><span class="insert">Miscellaneous final cleanup prior to CR staging.</span></li>
 </ul>
 
-</div>
+</section>
        
-<div class="appendix section" id="acknowledgements"> 
-      <h2><span class="secno"><span class="delete">B.</span><span class="insert">C.</span> </span>Acknowledgements</h2> 
+<section class="appendix" id="acknowledgements"> 
+      <h2><span class="secno"><span class="insert">C.</span> </span>Acknowledgements</h2> 
       <p> 
 
-This  document has been produced by the PROV Working Group, and its contents reflect extensive discussion within the Working Group as a whole. The editors extend special thanks to Ivan Herman (<acronym title="World Wide Web Consortium">W3C</acronym>/<acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym>), Paul Groth, Tim Lebo, Simon Miles, Stian Soiland-Reyes,  for their thorough reviews.
+This  document has been produced by the PROV Working Group, and its contents reflect extensive discussion within the Working Group as a whole. The editors extend special thanks to Ivan Herman (<abbr title="World Wide Web Consortium">W3C</abbr>/<abbr title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr>), Paul Groth, Tim Lebo, Simon Miles, Stian Soiland-Reyes,  for their thorough reviews.
       </p> 
 
 <p>
@@ -5421,9 +5576,9 @@
 Paul Groth (Vrije Universiteit),
 Olaf Hartig (Invited expert),
 David Hau (National Cancer Institute, NCI),
-Sandro Hawke (<acronym title="World Wide Web Consortium">W3C</acronym>/<acronym title="Massachusetts Institute of Technology">MIT</acronym>),
+Sandro Hawke (<abbr title="World Wide Web Consortium">W3C</abbr>/<abbr title="Massachusetts Institute of Technology">MIT</abbr>),
 Jörn Hees (German Research Center for Artificial Intelligence (DFKI) Gmbh),
-Ivan Herman, (<acronym title="World Wide Web Consortium">W3C</acronym>/<acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym>),
+Ivan Herman, (<abbr title="World Wide Web Consortium">W3C</abbr>/<abbr title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr>),
 Ralph Hodgson (TopQuadrant),
 Hook Hua (Invited expert),
 Trung Dong Huynh (University of Southampton),
@@ -5458,32 +5613,7 @@
 Jun Zhao (University of Oxford),
 Yuting Zhao (University of Aberdeen, Computing Science).
 </p>
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-</dd><span class="delete">[RDF]</span><dt id="bib-PROV-DM"><span class="insert">[PROV-DM]</span></dt><dd><span class="delete">Graham Klyne and Jeremy J. Carroll (eds.) </span><span class="insert">Luc Moreau; Paolo Missier; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/"><cite><span class="delete">Resource Description Framework (RDF): Concepts and Abstract Syntax</span><span class="insert">PROV-DM: The PROV Data Model</span></cite></a>. <span class="delete">2004,</span><span class="insert">11 December 2012,</span> W3C <span class="insert">Candidate </span>Recommendation. URL: <span class="delete">http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/</span><a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-dm-20121211/</span></a>
-</dd><dt id="bib-PROV-N"><span class="insert">[PROV-N]</span></dt><dd><span class="insert">Luc Moreau; Paolo Missier; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><cite><span class="insert">PROV-N: The Provenance Notation</span></cite></a><span class="insert">. 11 December 2012, W3C Candidate Recommendation. URL: </span><a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-n-20121211/</span></a><span class="insert">.
-</span></dd><dt id="bib-PROV-O"><span class="insert">[PROV-O]</span></dt><dd><span class="insert">Timothy Lebo; Satya Sahoo; Deborah McGuinness; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><cite><span class="insert">Provenance Formal Model</span></cite></a><span class="insert">. 11 December 2012, W3C Candidate Recommendation. URL: </span><a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-o-20121211/</span></a><span class="insert">.</span>
+</section> 
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+<section id="references" class="appendix"><h2><span class="secno"><span class="delete">C.</span><span class="insert">D.</span> </span>References</h2><section id="normative-references"><h3><span class="secno"><span class="delete">C.1</span><span class="insert">D.1</span> </span>Normative references</h3><dl class="bibliography"><span class="delete">[IRI]</span><dt id="bib-PROV-DM"><span class="insert">[PROV-DM]</span></dt><dd><span class="delete">M. Duerst, M. Suignard. </span><span class="insert">Luc Moreau; Paolo Missier; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/"><cite><span class="delete">Internationalized Resource Identifiers (IRI).</span><span class="insert">PROV-DM: The PROV Data Model</span></cite></a><span class="delete"> January 2005. Internet RFC 3987.</span><span class="insert">. 11 December 2012, W3C Candidate Recommendation.</span> URL: <span class="delete">http://www.ietf.org/rfc/rfc3987.txt</span> 
+<a href="http://www.w3.org/TR/2012/CR-prov-dm-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-dm-20121211/</span></a>
+</dd><span class="delete">[RDF]</span><dt id="bib-PROV-N"><span class="insert">[PROV-N]</span></dt><dd><span class="delete">Graham Klyne and Jeremy J. Carroll (eds.) </span><span class="insert">Luc Moreau; Paolo Missier; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><cite><span class="delete">Resource Description Framework (RDF): Concepts and Abstract Syntax</span><span class="insert">PROV-N: The Provenance Notation</span></cite></a>. <span class="delete">2004,</span><span class="insert">11 December 2012,</span> W3C <span class="insert">Candidate </span>Recommendation. URL: <span class="delete">http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/</span><a href="http://www.w3.org/TR/2012/CR-prov-n-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-n-20121211/</span></a>
+</dd><dt id="bib-PROV-O"><span class="insert">[PROV-O]</span></dt><dd><span class="insert">Timothy Lebo; Satya Sahoo; Deborah McGuinness; eds. </span><a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><cite><span class="insert">Provenance Formal Model</span></cite></a><span class="insert">. 11 December 2012, W3C Candidate Recommendation. URL: </span><a href="http://www.w3.org/TR/2012/CR-prov-o-20121211/"><span class="insert">http://www.w3.org/TR/2012/CR-prov-o-20121211/</span></a>
 </dd><dt id="bib-RFC2119">[RFC2119]</dt><dd>S. Bradner. <a href="http://www.ietf.org/rfc/rfc2119.txt"><cite>Key words for use in RFCs to Indicate Requirement Levels.</cite></a> March 1997. Internet RFC 2119.  URL: <a href="http://www.ietf.org/rfc/rfc2119.txt">http://www.ietf.org/rfc/rfc2119.txt</a> 
-</dd></dl></div><div id="informative-references" class="section"><h3><span class="secno"><span class="delete">C.2</span><span class="insert">D.2</span> </span>Informative references</h3><dl class="bibliography"><dt id="bib-CHR">[CHR]</dt><dd>Thom Frühwirth <a href="http://constraint-handling-rules.org/"><cite>Constraint        Handling Rules</cite></a>. Cambridge University Press  URL: <a href="http://constraint-handling-rules.org/">http://constraint-handling-rules.org/</a>
-</dd><dt id="bib-CLOCK">[CLOCK]</dt><dd>Lamport, L. <a href="http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf"><cite>Time, clocks, and the ordering of events in a distributed system</cite></a>. Communications of the ACM 21 (7): 558–565. 1978. URL: <a href="http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf">http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf</a> DOI: doi:10.1145/359545.359563.
-</dd><dt id="bib-DBCONSTRAINTS">[DBCONSTRAINTS]</dt><dd> Ronald Fagin, Phokion G. Kolaitis, Renée J. Miller, and Lucian Popa  <a href="http://dx.doi.org/10.1016/j.tcs.2004.10.033"><cite>Data        exchange: Semantics and query answering</cite></a>.  Theoretical computer science 336(1):89-124   Elsevier  URL: <a href="http://dx.doi.org/10.1016/j.tcs.2004.10.033">http://dx.doi.org/10.1016/j.tcs.2004.10.033</a>
-</dd><dt id="bib-Logic">[Logic]</dt><dd>W. E. Johnson<a href="http://www.ditext.com/johnson/intro-3.html"><cite>Logic: Part III</cite></a>.1924. URL: <a href="http://www.ditext.com/johnson/intro-3.html">http://www.ditext.com/johnson/intro-3.html</a>
-</dd><span class="delete">[PROV-DM]</span><dt id="bib-PROV-AQ"><span class="insert">[PROV-AQ]</span></dt><dd><span class="delete">Luc Moreau and Paolo Missier (eds.) Khalid Belhajjame, Reza B'Far, James Cheney, Stephen Cresswell, Yolanda Gil,</span><span class="insert">Graham Klyne;</span> Paul <span class="delete">Groth, Graham Klyne, Jim McCusker, Simon Miles, James Myers, Satya Sahoo, and Curt Tilmes </span><span class="insert">Groth; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><cite><span class="delete">PROV-DM: The PROV Data Model</span><span class="insert">Provenance Access and Query</span></cite></a>. <span class="insert">19 June </span>2012, Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-dm/</span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-aq-20120619/</span></a><span class="insert">.</span>
-</dd><span class="delete">[PROV-N]</span><dt id="bib-PROV-OVERVIEW"><span class="insert">[PROV-OVERVIEW]</span></dt><dd><span class="delete">Luc Moreau and Paolo Missier (eds.), James Cheney, Stian Soiland-Reyes </span><span class="insert">Editors TBD. </span><a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><cite><span class="delete">PROV-N:</span><span class="insert">PROV-OVERVIEW:</span> The <span class="delete">Provenance Notation</span><span class="insert">PROV Family of Documents</span></cite></a>. <span class="delete">2011,</span><span class="insert">11 December 2012,</span> Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-n/</span><a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-overview-20121211/</span></a><span class="insert">.</span>
-</dd><span class="delete">[PROV-O]</span><dt id="bib-PROV-PRIMER"><span class="insert">[PROV-PRIMER]</span></dt><dd><span class="delete">Timothy Lebo, Satya Sahoo and Deborah McGuinness (eds.) Khalid Belhajjame, James Cheney, David Corsar, Daniel Garijo, Stian Soiland-Reyes, and Stephan Zednik </span><span class="insert">Yolanda Gil; Simon Miles; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><cite><span class="delete">Provenance Formal</span><span class="insert">Prov</span> Model<span class="insert"> Primer</span></cite></a>. <span class="delete">2011,</span><span class="insert">11 December 2012,</span> Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-o/</span><a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-primer-20121211/</span></a><span class="insert">.</span>
-</dd><dt id="bib-PROV-SEM">[PROV-SEM]</dt><dd>James <span class="delete">Cheney</span><span class="insert">Cheney; ed.</span> <a href="http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman"><cite>Formal Semantics Strawman</cite></a>. 2011, Work in progress. URL: <a href="http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman">http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman</a><span class="insert">.
-</span></dd><dt id="bib-PROV-XML"><span class="insert">[PROV-XML]</span></dt><dd><span class="insert">Hook Hua; Curt Tilmes; Stephan Zednik; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><cite><span class="insert">PROV-XML: The PROV XML Schema</span></cite></a><span class="insert">. 11 December 2012, Working Draft. URL: </span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-xml-20121211/</span></a><span class="insert">.</span>
-</dd></dl></div></div></body></html>
-
+</dd><dt id="bib-RFC3987"><span class="insert">[RFC3987]</span></dt><dd><span class="insert">M. Dürst; M. Suignard. </span><a href="http://www.ietf.org/rfc/rfc3987.txt"><cite><span class="insert">Internationalized Resource Identifiers (IRIs).</span></cite></a><span class="insert"> January 2005. Internet RFC 3987. URL: </span><a href="http://www.ietf.org/rfc/rfc3987.txt"><span class="insert">http://www.ietf.org/rfc/rfc3987.txt</span></a> 
+</dd></dl></section><section id="informative-references"><h3><span class="secno"><span class="delete">C.2</span><span class="insert">D.2</span> </span>Informative references</h3><dl class="bibliography"><dt id="bib-CHR">[CHR]</dt><dd>Thom <span class="delete">Frühwirth</span><span class="insert">Frühwirth.</span> <a href="http://constraint-handling-rules.org/"><cite>Constraint        Handling Rules</cite></a>. Cambridge University Press  URL: <a href="http://constraint-handling-rules.org/">http://constraint-handling-rules.org/</a>
+</dd><dt id="bib-CLOCK">[CLOCK]</dt><dd><span class="delete">Lamport, </span>L.<span class="insert"> Lamport.</span> <a href="http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf"><cite>Time, clocks, and the ordering of events in a distributed system</cite></a>. Communications of the ACM 21 (7): 558–565. 1978. URL: <a href="http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf">http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf</a> DOI: doi:10.1145/359545.359563.
+</dd><dt id="bib-DBCONSTRAINTS">[DBCONSTRAINTS]</dt><dd> Ronald <span class="delete">Fagin,</span><span class="insert">Fagin;</span> Phokion G. <span class="delete">Kolaitis,</span><span class="insert">Kolaitis;</span> Renée J. <span class="delete">Miller, and</span><span class="insert">Miller;</span> Lucian <span class="delete">Popa</span><span class="insert">Popa.</span>  <a href="http://dx.doi.org/10.1016/j.tcs.2004.10.033"><cite>Data        exchange: Semantics and query answering</cite></a>.  Theoretical computer science 336(1):89-124   Elsevier  URL: <a href="http://dx.doi.org/10.1016/j.tcs.2004.10.033">http://dx.doi.org/10.1016/j.tcs.2004.10.033</a>
+</dd><dt id="bib-Logic">[Logic]</dt><dd>W. E. <span class="delete">Johnson</span><span class="insert">Johnson. </span><a href="http://www.ditext.com/johnson/intro-3.html"><cite>Logic: Part III</cite></a>.1924. URL: <a href="http://www.ditext.com/johnson/intro-3.html">http://www.ditext.com/johnson/intro-3.html</a>
+</dd><span class="delete">[PROV-DM]</span><dt id="bib-PROV-AQ"><span class="insert">[PROV-AQ]</span></dt><dd><span class="delete">Luc Moreau and Paolo Missier (eds.) Khalid Belhajjame, Reza B'Far, James Cheney, Stephen Cresswell, Yolanda Gil,</span><span class="insert">Graham Klyne;</span> Paul <span class="delete">Groth, Graham Klyne, Jim McCusker, Simon Miles, James Myers, Satya Sahoo, and Curt Tilmes </span><span class="insert">Groth; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><cite><span class="delete">PROV-DM: The PROV Data Model</span><span class="insert">Provenance Access and Query</span></cite></a>. <span class="insert">19 June </span>2012, Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-dm/</span><a href="http://www.w3.org/TR/2012/WD-prov-aq-20120619/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-aq-20120619/</span></a>
+</dd><span class="delete">[PROV-N]</span><dt id="bib-PROV-OVERVIEW"><span class="insert">[PROV-OVERVIEW]</span></dt><dd><span class="delete">Luc Moreau and Paolo Missier (eds.), James Cheney, Stian Soiland-Reyes </span><span class="insert">Editors TBD. </span><a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><cite><span class="delete">PROV-N:</span><span class="insert">PROV-OVERVIEW:</span> The <span class="delete">Provenance Notation</span><span class="insert">PROV Family of Documents</span></cite></a>. <span class="delete">2011,</span><span class="insert">11 December 2012,</span> Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-n/</span><a href="http://www.w3.org/TR/2012/WD-prov-overview-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-overview-20121211/</span></a>
+</dd><span class="delete">[PROV-O]</span><dt id="bib-PROV-PRIMER"><span class="insert">[PROV-PRIMER]</span></dt><dd><span class="delete">Timothy Lebo, Satya Sahoo and Deborah McGuinness (eds.) Khalid Belhajjame, James Cheney, David Corsar, Daniel Garijo, Stian Soiland-Reyes, and Stephan Zednik </span><span class="insert">Yolanda Gil; Simon Miles; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><cite><span class="delete">Provenance Formal</span><span class="insert">Prov</span> Model<span class="insert"> Primer</span></cite></a>. <span class="delete">2011,</span><span class="insert">11 December 2012,</span> Working Draft. URL: <span class="delete">http://www.w3.org/TR/prov-o/</span><a href="http://www.w3.org/TR/2012/WD-prov-primer-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-primer-20121211/</span></a>
+</dd><dt id="bib-PROV-SEM">[PROV-SEM]</dt><dd>James <span class="delete">Cheney</span><span class="insert">Cheney; ed.</span> <a href="http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman"><cite>Formal Semantics Strawman</cite></a>. 2011, Work in progress. URL: <a href="http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman">http://www.w3.org/2011/prov/wiki/FormalSemanticsStrawman</a> 
+</dd><dt id="bib-PROV-XML"><span class="insert">[PROV-XML]</span></dt><dd><span class="insert">Hook Hua; Curt Tilmes; Stephan Zednik; eds. </span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><cite><span class="insert">PROV-XML: The PROV XML Schema</span></cite></a><span class="insert">. 11 December 2012, Working Draft. URL: </span><a href="http://www.w3.org/TR/2012/WD-prov-xml-20121211/"><span class="insert">http://www.w3.org/TR/2012/WD-prov-xml-20121211/</span></a>
+</dd></dl></section></section></body></html>
+
--- a/model/diff.html	Wed Nov 21 08:27:46 2012 +0000
+++ b/model/diff.html	Wed Nov 21 08:31:37 2012 +0000
@@ -1661,7 +1661,7 @@
     
     
       <dt><span class="insert">Test suite:</span></dt>
-      <dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/testcases/constraints/process.html"><span class="insert">http://dvcs.w3.org/hg/prov/raw-file/default/testcases/constraints/process.html</span></a></dd>
+      <dd><a href="http://dvcs.w3.org/hg/prov/raw-file/default/testcases/process.html"><span class="insert">http://dvcs.w3.org/hg/prov/raw-file/default/testcases/constraints/process.html</span></a></dd>
     
     
       <dt><span class="insert">Implementation report:</span></dt>
--- a/model/diff/Makefile	Wed Nov 21 08:27:46 2012 +0000
+++ b/model/diff/Makefile	Wed Nov 21 08:31:37 2012 +0000
@@ -12,8 +12,10 @@
 rel:
 	./htmldiff ../releases/WD-prov-n-20120724/Overview.html ../releases/CR-prov-n-20121211/Overview.html  > ../diff-n.html
 	./htmldiff ../releases/WD-prov-dm-20120724/Overview.html ../releases/CR-prov-dm-20121211/Overview.html > ../diff.html
+	./htmldiff ../releases/WD-prov-constraints-20120911/Overview.html ../releases/CR-prov-constraints-20121211/Overview.html > ../diff-c.html
 	cp ../diff-n.html ../releases/CR-prov-n-20121211/
 	cp ../diff.html ../releases/CR-prov-dm-20121211/
+	cp ../diff-c.html ../releases/CR-prov-constraints-20121211/
 
 
 
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