--- a/ontology/components/wasInformedBy/prov-dm-constraint-wasInformedBy.ttl	Sun Nov 06 13:23:21 2011 -0500
+++ b/ontology/components/wasInformedBy/prov-dm-constraint-wasInformedBy.ttl	Sun Nov 06 14:07:09 2011 -0500
@@ -30,18 +30,23 @@
    prov:wasGeneratedBy :pe1;
 .
 :pe1
+   a prov:ProcessExecution;
    prov:generated :e;
    prov:qualifiedGeneration [
       a prov:Generation;
       prov:entity :e;
+      rdfs:comment "Some addition triples should be here, but are not provided by the PROV-DM example.";
    ];
 .
 
 :pe2
    rdfs:seeAlso <http://www.w3.org/TR/2011/WD-prov-dm-20111018/#expression-OrderingOfProcessExecutions>;
    dcterms:description "used(pe2,e,q2)";
+   a prov:ProcessExecution;
    prov:used :e;
    prov:qualifedUsage [
-      a prov:Use;
+      a prov:Usage;
+      prov:entity :e;
+      rdfs:comment "Some addition triples should be here, but are not provided by the PROV-DM example.";
    ];
 .