--- a/ontology/ProvenanceOntology.owl	Fri Apr 20 09:48:45 2012 -0400
+++ b/ontology/ProvenanceOntology.owl	Fri Apr 20 10:04:34 2012 -0400
@@ -1295,6 +1295,7 @@
     <owl:Class rdf:about="&prov;Invalidation">
         <rdfs:subClassOf rdf:resource="&prov;ActivityInvolvement"/>
         <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
+        <prov:prov-n>http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-n.html#expression-Invalidation</prov:prov-n>
         <prov:component>entities-activities</prov:component>
         <prov:category>qualified</prov:category>
         <prov:prov-dm>http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-dm.html#term-Invalidation</prov:prov-dm>