--- a/model/prov-dm.html	Tue Apr 24 06:33:47 2012 +0200
+++ b/model/prov-dm.html	Tue Apr 24 06:39:53 2012 +0200
@@ -1299,7 +1299,7 @@
 
 
 <p>
-Entities have a duration. Generation marks the beginning of an entity. The end of an entity can occur for different reasons.</p>
+Entities have a duration. Generation marks the beginning of an entity. An entity's lifetime can end for different reasons:</p>
 <ul>
 <li> an entity was destroyed: e.g. a painting was destroyed by fire; a Web page is taken out of a site;
 <li> an entity was consumed: e.g. Bob ate all his soup, Alice ran out of gas when driving to work;