--- a/ontology/ProvenanceOntology.owl	Mon Mar 12 12:06:12 2012 +0000
+++ b/ontology/ProvenanceOntology.owl	Mon Mar 12 10:43:52 2012 -0400
@@ -754,7 +754,7 @@
     <!-- http://www.w3.org/ns/prov#AgentInvolvement -->
 
     <owl:Class rdf:about="&prov;AgentInvolvement">
-        <rdfs:subClassOf rdf:resource="&prov;EntityInvolvement"/>
+        <rdfs:subClassOf rdf:resource="&prov;Involvement"/>
         <prov:category>qualified</prov:category>
     </owl:Class>
     
@@ -812,7 +812,7 @@
     <!-- http://www.w3.org/ns/prov#End -->
 
     <owl:Class rdf:about="&prov;End">
-        <rdfs:subClassOf rdf:resource="&prov;Association"/>
+        <rdfs:subClassOf rdf:resource="&prov;AgentInvolvement"/>
         <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <prov:category>qualified</prov:category>
         <rdfs:comment>An Agent ends an Activity, optionally at a particular TimeInstant.</rdfs:comment>
@@ -968,7 +968,7 @@
     <!-- http://www.w3.org/ns/prov#Revision -->
 
     <owl:Class rdf:about="&prov;Revision">
-        <rdfs:subClassOf rdf:resource="&prov;Source"/>
+        <rdfs:subClassOf rdf:resource="&prov;EntityInvolvement"/>
         <prov:category>additional</prov:category>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Revision"/>
         <prov:unqualifiedForm rdf:resource="&prov;wasRevisionOf"/>
@@ -999,7 +999,7 @@
     <!-- http://www.w3.org/ns/prov#Source -->
 
     <owl:Class rdf:about="&prov;Source">
-        <rdfs:subClassOf rdf:resource="&prov;Derivation"/>
+        <rdfs:subClassOf rdf:resource="&prov;EntityInvolvement"/>
         <prov:category>additional</prov:category>
         <rdfs:comment rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Original_Source"/>
         <prov:unqualifiedForm rdf:resource="&prov;hadOriginalSource"/>
@@ -1010,7 +1010,7 @@
     <!-- http://www.w3.org/ns/prov#Start -->
 
     <owl:Class rdf:about="&prov;Start">
-        <rdfs:subClassOf rdf:resource="&prov;Association"/>
+        <rdfs:subClassOf rdf:resource="&prov;AgentInvolvement"/>
         <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:comment>An Agent starts an Activity, optionally at a particular TimeInstant.</rdfs:comment>
         <prov:category>qualified</prov:category>