--- a/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Involvement.ttl	Tue Jun 05 12:51:04 2012 -0400
+++ b/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Involvement.ttl	Tue Jun 05 12:52:56 2012 -0400
@@ -2,6 +2,7 @@
 @prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
 @prefix owl:  <http://www.w3.org/2002/07/owl#> .
 @prefix prov: <http://www.w3.org/ns/prov#> .
+@prefix my:   <http://example.com/ontology#> .
 @prefix :     <http://example.com/> .
 
 # Although a domain extension (e.g. ':wasConductedBy') is not defined by PROV-O,