--- a/ontology/ProvenanceOntology.owl	Mon Nov 05 08:42:01 2012 -0500
+++ b/ontology/ProvenanceOntology.owl	Mon Nov 05 08:48:23 2012 -0500
@@ -1758,7 +1758,7 @@
         <component>entities-activities</component>
         <category>qualified</category>
         <rdfs:comment xml:lang="en">An instance of prov:Start provides additional descriptions about the binary prov:wasStartedBy relation from some started prov:Activity to an prov:Entity that started it. For example, :foot_race prov:wasStartedBy :bang; prov:qualifiedStart [ a prov:Start; prov:entity :bang; :foo :bar; prov:atTime &#39;2012-03-09T08:05:08-05:00&#39;^^xsd:dateTime ] .</rdfs:comment>
-        <definition xml:lang="en">Start is when an activity is deemed to have started. The activity did not exist before its start. Any usage or generation involving an activity follows the activity&#39;s start. A start may refer to an entity, known as trigger, that set off the activity, or to an activity, known as starter, that generated the trigger.</definition>
+        <definition xml:lang="en">Start is when an activity is deemed to have been started by an an entity, known as trigger. The activity did not exist before its start. Any usage, generation, or invalidation involving an activity follows the activity&#39;s start. A start may refer to a trigger entity that set off the activity, or to an activity, known as starter, that generated the trigger.</definition>
         <rdfs:isDefinedBy rdf:resource="http://www.w3.org/ns/prov#"/>
         <unqualifiedForm rdf:resource="http://www.w3.org/ns/prov#wasStartedBy"/>
     </owl:Class>

--- a/ontology/prov.ttl	Mon Nov 05 08:42:01 2012 -0500
+++ b/ontology/prov.ttl	Mon Nov 05 08:48:23 2012 -0500
@@ -391,7 +391,7 @@
     :category "qualified" ;
     :component "entities-activities" ;
     :constraints "http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-constraints.html#prov-dm-constraints-fig"^^xsd:anyURI ;
-    :definition "Start is when an activity is deemed to have started. The activity did not exist before its start. Any usage or generation involving an activity follows the activity's start. A start may refer to an entity, known as trigger, that set off the activity, or to an activity, known as starter, that generated the trigger."@en ;
+    :definition "Start is when an activity is deemed to have been started by an an entity, known as trigger. The activity did not exist before its start. Any usage, generation, or invalidation involving an activity follows the activity's start. A start may refer to a trigger entity that set off the activity, or to an activity, known as starter, that generated the trigger."@en ;
     :dm "http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-dm.html#term-Start"^^xsd:anyURI ;
     :n "http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-n.html#expression-Start"^^xsd:anyURI ;
     :unqualifiedForm :wasStartedBy .