--- a/ontology/ProvenanceFormalModel.html	Fri Oct 07 13:19:37 2011 -0400
+++ b/ontology/ProvenanceFormalModel.html	Fri Oct 07 13:58:47 2011 -0400
@@ -170,7 +170,7 @@
 	      <p>The PROV ontology consists of seven classes that can be organized in a taxonomic structure.
 		  </p>	
 		  <img src="diagram-history/khalidDiagrams/Ontology_hierarchy.png"
-          style="width: 50%; min-width: 25em; max-width: 37em" /><br>
+          style="width: 50%; min-width: 25em; max-width: 37em" alt="Class hierarchy of the PROV OWL ontology"/><br>
 		  <p/> 
 	    <p><i>Note: CamelBack notation is used for class names</i></p> 
 	    <section>