--- a/ontology/ProvenanceOntology.owl	Thu Feb 23 22:33:38 2012 -0500
+++ b/ontology/ProvenanceOntology.owl	Thu Feb 23 22:43:54 2012 -0500
@@ -114,6 +114,7 @@
 
     <owl:ObjectProperty rdf:about="&prov;adoptedPlan">
         <rdf:type rdf:resource="&owl;AsymmetricProperty"/>
+        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
         <rdf:type rdf:resource="&owl;IrreflexiveProperty"/>
         <rdfs:label xml:lang="en">had plan</rdfs:label>
         <rdfs:comment xml:lang="en">The Activity performed was described by the given plan resource. Activity specifications, as referred to by plan links, are out of scope of this           specification</rdfs:comment>