diff --git a/src/cco-extensions/ModalRelationOntology.ttl b/src/cco-extensions/ModalRelationOntology.ttl
index 6f90958..e00caaf 100644
--- a/src/cco-extensions/ModalRelationOntology.ttl
+++ b/src/cco-extensions/ModalRelationOntology.ttl
@@ -2160,8 +2160,10 @@ mro:ont00001918 rdf:type owl:ObjectProperty ;
 ###  https://www.commoncoreontologies.org/mro/ont00001919
 mro:ont00001919 rdf:type owl:ObjectProperty ;
                 rdfs:subPropertyOf mro:mro00000001 ;
+                rdfs:domain obo:BFO_0000001 ;
+                rdfs:range cco:ont00000253 ;
                 rdfs:label "is mentioned by"@en ;
-                <http://www.w3.org/2004/02/skos/core#definition> "y is_mention_by x iff x is an instance Information Bearing Entity and y is an instance Entity, such that x is used as a reference to y."@en ;
+                <http://www.w3.org/2004/02/skos/core#definition> "x is_mention_by y iff y is an instance of Information Bearing Entity and x is an instance of Entity, such that y is used as a reference to x."@en ;
                 cco:ont00001760 <https://www.commoncoreontologies.org/ModalRelationOntology> .