--- a/presentations/iswc-2012/rdfa/blog-example-rdfa.html	Wed Nov 07 19:52:04 2012 -0500
+++ b/presentations/iswc-2012/rdfa/blog-example-rdfa.html	Wed Nov 07 19:57:44 2012 -0500
@@ -27,6 +27,7 @@
     	<div resource="graph.png" typeof="prov:Entity">
           <a property="prov:wasDerivedFrom" href="http://www.guardian.co.uk/news/datablog/2012/nov/02/happiness-index-how-much-trust-government#highcharts-0">
           <img  alt="graph of civic participation" src="graph.png"/>
+          <span property="prov:wasGeneratedBy" resource="#screencapture"></span>
           </a>
         </div>
         <p>