Minor tweak to Linked Data definition to address a concern from Pat Hayes.
--- a/spec/latest/json-ld-syntax/index.html Sun Jun 10 23:24:17 2012 -0400
+++ b/spec/latest/json-ld-syntax/index.html Sun Jun 10 23:39:02 2012 -0400
@@ -561,12 +561,11 @@
<li>A <tdef>subject</tdef> is any node in a <tref>linked data graph</tref> with at least one outgoing edge.</li>
<li>A <tref>subject</tref> SHOULD be labeled with an <tdef><abbr title="Internationalized Resource Identifier">IRI</abbr></tdef> (an Internationalized Resource Identifier as described in [[!RFC3987]]).</li>
<li>An <tdef>object</tdef> is a node in a <tref>linked data graph</tref> with at least one incoming edge.</li>
- <li>An <tref>object</tref> MAY be labeled with an <tref>IRI</tref>.</li>
+ <li>An <tref>object</tref> MAY be labeled with an <tref>IRI</tref> or a label that is not an <tref>IRI</tref> such as plain text, internationalized text, or a strictly-typed data value.</li>
<li>A node MAY be a <tref>subject</tref> and <tref>object</tref> at the same time.</li>
<li>A <tdef>property</tdef> is an edge of the <tref>linked data graph</tref>.</li>
<li>A <tref>property</tref> SHOULD be labeled with an <tref>IRI</tref>.</li>
<li>An <tref>IRI</tref> that is a label in a <tref>linked data graph</tref> SHOULD be dereferencable to a <tref>Linked Data</tref> document describing the labeled <tref>subject</tref>, <tref>object</tref> or <tref>property</tref>.</li>
- <li>A <tdef>value</tdef> is an <tref>object</tref> with a label that is not an <tref>IRI</tref></li>
</ol>
<p class="issue">An illustration of a linked data graph would probably help here.</p>