--- a/html-data-guide/index.html	Mon Dec 19 11:32:35 2011 +0000
+++ b/html-data-guide/index.html	Mon Dec 19 11:35:28 2011 +0000
@@ -182,7 +182,7 @@
           A <dfn>vocabulary</dfn> is a set of terms for describing <a title="entity">entities</a> within a particular domain. Different mechanisms are used for describing vocabularies. A microformat vocabulary is described within a wiki page. An RDFa vocabulary might be described through an RDFS schema or OWL ontology provided at the vocabulary's URI. A microdata vocabulary must be described within a specification that describes how it is processed.
         </p>
         <p>
-          All three <a title="syntax">syntaxes</a> follow the same general data model. Each is used to describe <dfn title="entity">entities</dfn> &mdash; things such as people or events (RDFa calls these resources, microdata calls these items). These entities each have one or more <dfn title="type">types</dfn> which indicate what kind of thing they are and a number of <dfn title="property">properties</dfn> that have <dfn title="value">values</dfn>, which provide the data about the entity.
+          All three <a title="syntax">syntaxes</a> follow a similar data model. Each is used to describe <dfn title="entity">entities</dfn> &mdash; things such as people or events (RDFa calls these resources, microdata calls these items). These entities each have one or more <dfn title="type">types</dfn> which indicate what kind of thing they are and a number of <dfn title="property">properties</dfn> that have <dfn title="value">values</dfn>, which provide the data about the entity. The main difference is that in the RDF generated from RDFa, the entities are arranged in a graph, whereas the default data model for microformats and microdata is a tree.
         </p>
       </section>