--- a/spec/latest/json-ld-syntax/index.html	Tue Dec 04 21:52:39 2012 +0100
+++ b/spec/latest/json-ld-syntax/index.html	Tue Dec 04 22:11:13 2012 +0100
@@ -2890,9 +2890,14 @@
   </ul>
 
   <p>Summarized these differences mean that JSON-LD is capable of serializing any RDF
-    graph and most, but not all, JSON-LD documents can be transformed to RDF. A complete
-    description of the algorithms to convert from RDF to JSON-LD and from
+    graph or dataset and most, but not all, JSON-LD documents can be transformed to RDF.
+    A complete description of the algorithms to convert from RDF to JSON-LD and from
     JSON-LD to RDF is included in the JSON-LD API [[JSON-LD-API]] specification.</p>
+
+  <p>Even though JSON-LD serializes RDF datasets, it can also be used as a RDF graph source.
+    In that case, a consumer MUST only use the default graph and ignore all named graphs.
+    This allows servers to expose data in, e.g., both Turtle and JSON-LD using content
+    negotiation.</p>
 </section>
 
 <section class="appendix informative">