diff --git a/src/cco-modules/ExtendedRelationOntology.ttl b/src/cco-modules/ExtendedRelationOntology.ttl
index 8cd7d63..fe92df0 100644
--- a/src/cco-modules/ExtendedRelationOntology.ttl
+++ b/src/cco-modules/ExtendedRelationOntology.ttl
@@ -558,9 +558,12 @@ cco:ont00001933 rdf:type owl:ObjectProperty ;
 
 ###  https://www.commoncoreontologies.org/ont00001936
 cco:ont00001936 rdf:type owl:ObjectProperty ;
-                 rdfs:subPropertyOf obo:BFO_0000056 ;
-                 rdfs:label "is object of"@en ;
-                 skos:definition "If p is a process and c is a continuant, then c is object of p if and only if the c is part of the projected state that the agent intends to achieve by performing p."@en ;
+                rdfs:subPropertyOf obo:BFO_0000056 ;
+                owl:inverseOf cco:ont00001778 ;
+                rdfs:domain obo:BFO_0000002 ;
+                rdfs:range obo:BFO_0000015 ;
+                rdfs:label "is object of"@en ;
+                <http://www.w3.org/2004/02/skos/core#definition> "x is_object_of y iff x is an instance of Continuant and y is an instance of Process and y is performed by some instance of Agent z and x is part of the projected state that z intends to achieve by performing y."@en ;
                  cco:ont00001760 "https://www.commoncoreontologies.org/ExtendedRelationOntology"^^xsd:anyURI .