diff --git a/src/cco-extensions/ModalRelationOntology.ttl b/src/cco-extensions/ModalRelationOntology.ttl
index 9d0fd88..189b8da 100644
--- a/src/cco-extensions/ModalRelationOntology.ttl
+++ b/src/cco-extensions/ModalRelationOntology.ttl
@@ -1034,7 +1034,7 @@ mro:ont00001808 rdf:type owl:ObjectProperty ;
                 rdfs:domain cco:ont00000958 ;
                 rdfs:range obo:BFO_0000001 ;
                 rdfs:label "is about"@en ;
-                <http://www.w3.org/2004/02/skos/core#definition> "A primitive relationship between an Information Content Entity and some Entity."@en ;
+                <http://www.w3.org/2004/02/skos/core#definition> "A primitive relationship between some instance of Entity x and an instance of Information Content Entity y."@en ;
                 cco:ont00001754 "http://purl.obolibrary.org/obo/IAO_0000136" ;
                 cco:ont00001760 <https://www.commoncoreontologies.org/ModalRelationOntology> .