--- a/presentations/iswc-2012/prov-dm/overview/index2.html	Mon Nov 12 06:54:28 2012 -0500
+++ b/presentations/iswc-2012/prov-dm/overview/index2.html	Mon Nov 12 07:04:45 2012 -0500
@@ -1161,7 +1161,8 @@
 </div>
 </p>
 
-
+<p>e1 <em>precedes</em> e2:  reflexive, transitive relation. </p>
+<p>e1 <em>strictly precedes</em> e2:  irreflexive, transitive relation. </p>
 
 <div class="note" id="responsibility.note">
 <p>some note here</p>