--- a/examples/eg-20-collections-exercise/rdf/eg-20-collections-exercise.ttl	Sun Apr 01 17:20:48 2012 -0400
+++ b/examples/eg-20-collections-exercise/rdf/eg-20-collections-exercise.ttl	Sun Apr 01 15:51:51 2012 -0600
@@ -85,7 +85,7 @@
 prov:key a owl:DatatypeProperty ;
    rdfs:domain prov:KeyValuePair . 
 
-prov:removed a owl:ObjectProperty ;
+prov:removed a owl:DatatypeProperty ;
     rdfs:domain prov:Removal .
 
 ### examples ###