--- a/examples/eg-34-us-supreme-court-membership/rdf/eg-34-us-supreme-court-membership.ttl	Tue Jun 05 01:07:11 2012 -0400
+++ b/examples/eg-34-us-supreme-court-membership/rdf/eg-34-us-supreme-court-membership.ttl	Tue Jun 05 01:11:18 2012 -0400
@@ -28,6 +28,9 @@
       a prov:Generation;
       dcterms:date "2012"^^xsd:gYear; # Since we need to be imprecise, we can't use prov:generatedAtTime or prov:atTime
    ];
+
+   prov:wasDerivedFrom :the-first-us-supreme-court;
+
    prov:hadMember                                             # These would be asserted on a simple (first step)
       <http://dbpedia.org/resource/John_Glover_Roberts,_Jr.>, # prov:Collection.
       <http://dbpedia.org/resource/Antonin_Scalia>,           #