--- a/rdf-concepts/index.html	Sat Sep 24 07:03:06 2011 -0700
+++ b/rdf-concepts/index.html	Sun Sep 25 17:51:08 2011 +0100
@@ -1049,7 +1049,28 @@
             <li><a href="http://www.w3.org/2011/rdf-wg/track/issues/32">ISSUE-32: Can we identify both g-boxes and g-snaps?</a></li>
             <li><a href="http://www.w3.org/2011/rdf-wg/track/issues/33">ISSUE-33: Do we provide a way to refer to sub-graphs and/or individual triples?</a></li>
         </ul>
+        <p>The design presented here should be considered a straw man proposal at this point. It is based on RDF Datasets as <a href="http://www.w3.org/TR/sparql11-query/#rdfDataset">defined in SPARQL 1.1</a>.</p>
     </div>
+
+    <p>The RDF data model expresses information as
+    <a title="RDF graph">RDF graphs</a> consisting of
+    <a title="triple">triples</a> with subject, predicate and object.
+    Often, one wants to hold multiple RDF graphs and record information
+    about each graph, allowing an application to work with datasets
+    that involve information from more than one graph.</p>
+
+    <p>An <dfn>RDF Dataset</dfn> is a collection of
+    <a title="RDF graph">RDF graphs</a> and comprises:</p>
+
+    <ul>
+    <li>Exactly one <dfn>default graph</dfn>, being an <a>RDF graph</a>.
+    The default graph does not have a name.</li>
+    <li>Zero or more <dfn title="named graph">named graphs</dfn>.
+    Each named graph is a pair consisting of an <a>IRI</a>
+    (the <dfn>graph name</dfn>), and an <a>RDF graph</a>.
+    Graph names are unique within an RDF dataset.</li>
+    </ul>
+
 </section>
 
 </section>