--- a/examples/eg-20-collections-exercise/rdf/eg-20-collections-exercise.ttl	Mon Apr 02 11:04:42 2012 +0100
+++ b/examples/eg-20-collections-exercise/rdf/eg-20-collections-exercise.ttl	Mon Apr 02 11:12:47 2012 +0100
@@ -90,7 +90,7 @@
 prov:key a owl:DatatypeProperty, owl:FunctionalProperty ;
    rdfs:domain prov:KeyValuePair . 
 
-prov:removed a owl:DatatypeProperty ;
+prov:removedKey a owl:DatatypeProperty ;
     rdfs:domain prov:Removal .
 
 ### examples ###
@@ -155,7 +155,7 @@
     prov:qualifiedRemoval 
    [ a prov:Removal ;
      prov:collection :c2 ;
-     prov:removed "k1"^^xsd:string, "k3"^^xsd:string 
+     prov:removedKey "k1"^^xsd:string, "k3"^^xsd:string 
    ] .