--- a/model/prov-constraints.html	Fri Nov 09 09:43:57 2012 -0700
+++ b/model/prov-constraints.html	Fri Nov 09 11:59:14 2012 -0500
@@ -496,7 +496,7 @@
 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 [[PROV-DM]] that defines a data model for
-  provenance on the Web.  </p>
+  provenance on the Web. This document defines how to precisely validate provenance documents. </p>