diff --git a/EventOntology.ttl b/EventOntology.ttl
index fa2d4a9..5bb9d0b 100644
--- a/EventOntology.ttl
+++ b/EventOntology.ttl
@@ -1680,7 +1680,7 @@ cco:GainOfDisposition rdf:type owl:Class ;
                                       ] ;
                       cco:definition "A Gain of Realizable Entity in which some Independent Continuant becomes the bearer of some Disposition."@en ;
                       cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/EventOntology"^^xsd:anyURI ;
-                      rdfs:comment "This class should be used to demarcate the start of the temporal interval (through the occurs_on property) that the Entity bears the Disposition."@en ;
+                      rdfs:comment "This class should be used to demarcate the start of the temporal interval (through the BFO 'occupies temporal region' property) that the Entity bears the Disposition."@en ;
                       rdfs:label "Gain of Disposition"@en .
 
 
@@ -1700,7 +1700,7 @@ cco:GainOfFunction rdf:type owl:Class ;
                                    ] ;
                    cco:definition "A Gain of Realizable Entity in which some Independent Continuant becomes the bearer of some Function."@en ;
                    cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/EventOntology"^^xsd:anyURI ;
-                   rdfs:comment "This class should be used to demarcate the start of the temporal interval (through the occurs_on property) that the Entity bears the Function."@en ;
+                   rdfs:comment "This class should be used to demarcate the start of the temporal interval (through the BFO 'occupies temporal region' property) that the Entity bears the Function."@en ;
                    rdfs:label "Gain of Function"@en .