--- a/ontology/ProvenanceOntology.owl	Thu Feb 23 22:52:40 2012 -0500
+++ b/ontology/ProvenanceOntology.owl	Thu Feb 23 22:55:34 2012 -0500
@@ -266,8 +266,8 @@
         <rdf:type rdf:resource="&owl;IrreflexiveProperty"/>
         <rdfs:label xml:lang="en">had temporal extent</rdfs:label>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Usage"/>
+        <rdfs:domain rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:range rdf:resource="&prov;TimeInstant"/>
-        <rdfs:domain rdf:resource="&prov;Timed"/>
     </owl:ObjectProperty>
     
 
@@ -532,7 +532,7 @@
     <owl:Class rdf:about="&prov;Activity">
         <rdfs:label xml:lang="en">Activity</rdfs:label>
         <rdfs:subClassOf rdf:resource="&prov;Element"/>
-        <rdfs:subClassOf rdf:resource="&prov;Timed"/>
+        <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:comment xml:lang="en">Activity is defined to be &#39;an identifiable activity, which performs a piece of work.&#39;</rdfs:comment>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Activity"/>
     </owl:Class>
@@ -623,7 +623,7 @@
 
     <owl:Class rdf:about="&prov;End">
         <rdfs:subClassOf rdf:resource="&prov;Association"/>
-        <rdfs:subClassOf rdf:resource="&prov;Timed"/>
+        <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Ending"/>
     </owl:Class>
     
@@ -653,7 +653,7 @@
 
     <owl:Class rdf:about="&prov;Generation">
         <rdfs:subClassOf rdf:resource="&prov;ActivityInvolvement"/>
-        <rdfs:subClassOf rdf:resource="&prov;Timed"/>
+        <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:comment xml:lang="de">An instance of prov:Generation provides additional descriptions about the binary prov:wasGeneratedBy relation from a generated prov:Entity to the prov:Activity that generated it. For example, :cake prov:wasGeneratedBy :baking; prov:qualified [ a prov:Generation; prov:entity :baking; :foo :bar ].</rdfs:comment>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Generation"/>
     </owl:Class>
@@ -669,6 +669,12 @@
     
 
 
+    <!-- http://www.w3.org/ns/prov#InstantaneousEvent -->
+
+    <owl:Class rdf:about="&prov;InstantaneousEvent"/>
+    
+
+
     <!-- http://www.w3.org/ns/prov#Involvement -->
 
     <owl:Class rdf:about="&prov;Involvement">
@@ -779,7 +785,7 @@
 
     <owl:Class rdf:about="&prov;Start">
         <rdfs:subClassOf rdf:resource="&prov;Association"/>
-        <rdfs:subClassOf rdf:resource="&prov;Timed"/>
+        <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Starting"/>
     </owl:Class>
     
@@ -825,12 +831,6 @@
     
 
 
-    <!-- http://www.w3.org/ns/prov#Timed -->
-
-    <owl:Class rdf:about="&prov;Timed"/>
-    
-
-
     <!-- http://www.w3.org/ns/prov#Trace -->
 
     <owl:Class rdf:about="&prov;Trace">
@@ -847,7 +847,7 @@
 
     <owl:Class rdf:about="&prov;Usage">
         <rdfs:subClassOf rdf:resource="&prov;EntityInvolvement"/>
-        <rdfs:subClassOf rdf:resource="&prov;Timed"/>
+        <rdfs:subClassOf rdf:resource="&prov;InstantaneousEvent"/>
         <rdfs:seeAlso rdf:resource="http://www.w3.org/2011/prov/wiki/ProvRDF#Usage"/>
     </owl:Class>
 </rdf:RDF>