--- a/ldp.ttl	Thu Apr 18 16:29:34 2013 -0400
+++ b/ldp.ttl	Thu Apr 18 16:32:44 2013 -0400
@@ -80,6 +80,15 @@
 	rdfs:isDefinedBy :;
 	rdfs:label "membershipPredicate";
 	rdfs:range rdf:Property.
+
+:membershipPredicateInverse
+	a rdf:Property;
+	rdfs:comment "Indicates which predicate of the container should be used to determine the inverse membership.";
+	vs:term_status "unstable";
+	rdfs:domain :Container;
+	rdfs:isDefinedBy :;
+	rdfs:label "membershipPredicateInverse";
+	rdfs:range rdf:Property.
 	
 :membershipSubject
 	a rdf:Property;