--- a/ontology/examples/ontology-extensions/workflow/workflow.rdf	Fri Oct 21 11:53:08 2011 +0100
+++ b/ontology/examples/ontology-extensions/workflow/workflow.rdf	Fri Oct 21 11:53:20 2011 +0100
@@ -2,6 +2,7 @@
     xmlns:cnt="http://www.w3.org/2011/content#"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prov="http://www.w3.org/ns/prov-o/"
+    xmlns:time="http://www.w3.org/2006/time#"
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:wf="http://www.example.com/scientific-workflow#"
     xmlns:base="http://www.example.com/run1#" >
@@ -38,6 +39,11 @@
             <wf:ValueAtPort>
                 <wf:sawValue rdf:resource="#input"/>
                 <wf:seenAtPort rdf:resource="http://www.example.com/workflow1#inName"/>
+                <prov:assumedRoleAt>
+                    <prov:Time>
+                        <time:inDateTimeXSD>2011-10-21T09:21:31Z</time:inDateTimeXSD>
+                    </prov:Time>
+                </prov:assumedRoleAt>
             </wf:ValueAtPort>
         </used>
         <wf:ranInWorkflowEngine rdf:resource="#workflowEngine"/>