--- a/ontology/ProvenanceOntology.owl	Tue Feb 21 14:00:54 2012 +0000
+++ b/ontology/ProvenanceOntology.owl	Tue Feb 21 14:19:20 2012 +0000
@@ -543,7 +543,6 @@
     <!-- http://www.w3.org/ns/prov#Bundle -->
 
     <owl:Class rdf:about="http://www.w3.org/ns/prov#Bundle">
-        <rdfs:subClassOf rdf:resource="&owl;Thing"/>
         <rdfs:seeAlso rdf:datatype="&xsd;anyURI">http://www.w3.org/2011/prov/wiki/ProvRDF#Bundle</rdfs:seeAlso>
         <rdfs:comment>prov:Bundles are best modeled using sd:NamedGraphs.</rdfs:comment>
         <rdfs:comment>A prov:Bundle is a group of PROV statements.</rdfs:comment>
@@ -635,7 +634,6 @@
 
     <owl:Class rdf:about="http://www.w3.org/ns/prov#Location">
         <rdfs:label xml:lang="en">Location</rdfs:label>
-        <rdfs:subClassOf rdf:resource="&owl;Thing"/>
         <rdfs:seeAlso rdf:datatype="&xsd;anyURI">http://www.w3.org/2011/prov/wiki/ProvRDF#Location</rdfs:seeAlso>
         <rdfs:seeAlso>http://www.w3.org/ns/prov#hadSpatialExtent</rdfs:seeAlso>
     </owl:Class>
@@ -645,7 +643,6 @@
     <!-- http://www.w3.org/ns/prov#Note -->
 
     <owl:Class rdf:about="http://www.w3.org/ns/prov#Note">
-        <rdfs:subClassOf rdf:resource="&owl;Thing"/>
         <rdfs:seeAlso rdf:datatype="&xsd;anyURI">http://www.w3.org/2011/prov/wiki/ProvRDF#Note</rdfs:seeAlso>
         <rdfs:seeAlso rdf:datatype="&xsd;anyURI">http://www.w3.org/ns/prov#hadNote</rdfs:seeAlso>
     </owl:Class>
@@ -758,7 +755,6 @@
     <!-- http://www.w3.org/ns/prov#TimeInstant -->
 
     <owl:Class rdf:about="http://www.w3.org/ns/prov#TimeInstant">
-        <rdfs:subClassOf rdf:resource="&owl;Thing"/>
         <rdfs:comment rdf:datatype="&xsd;string">&#39;Instants are, intuitively, point-like in that they have no interior points&#39;
 reusing notion from W3C OWL-Time Working Draft (http://www.w3.org/TR/owl-time/), but not associating to it directly because it is not a Recommendation.</rdfs:comment>
         <rdfs:seeAlso rdf:datatype="&xsd;anyURI">http://www.w3.org/2011/prov/wiki/ProvRDF#Activity</rdfs:seeAlso>