diff --git a/src/cco-modules/EventOntology.ttl b/src/cco-modules/EventOntology.ttl
index 2e16cee..15a8294 100644
--- a/src/cco-modules/EventOntology.ttl
+++ b/src/cco-modules/EventOntology.ttl
@@ -1384,8 +1384,8 @@ cco:DecreaseOfDisposition rdf:type owl:Class ;
 
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/DecreaseOfFunction
 cco:DecreaseOfFunction rdf:type owl:Class ;
-                       rdfs:subClassOf cco:DecreaseOfRealizableEntity ;
-                       cco:definition "A Decrease of Realizable Entity in which some Independent Continuant has a decrease of some Function that it bears."@en ;
+                       rdfs:subClassOf cco:DecreaseOfDisposition ;
+                       cco:definition "A Decrease of Disposition in which some Independent Continuant has a decrease of some Function that it bears."@en ;
                        cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/EventOntology"^^xsd:anyURI ;
                        rdfs:label "Decrease of Function"@en .
 
@@ -1704,7 +1704,7 @@ cco:GainOfDisposition rdf:type owl:Class ;
 
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/GainOfFunction
 cco:GainOfFunction rdf:type owl:Class ;
-                   rdfs:subClassOf cco:GainOfRealizableEntity ,
+                   rdfs:subClassOf cco:GainOfDisposition ,
                                    [ rdf:type owl:Restriction ;
                                      owl:onProperty obo:BFO_0000057 ;
                                      owl:someValuesFrom [ owl:intersectionOf ( obo:BFO_0000004
@@ -1716,7 +1716,7 @@ cco:GainOfFunction rdf:type owl:Class ;
                                                           rdf:type owl:Class
                                                         ]
                                    ] ;
-                   cco:definition "A Gain of Realizable Entity in which some Independent Continuant becomes the bearer of some Function."@en ;
+                   cco:definition "A Gain of Disposition 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 BFO 'occupies temporal region' property) that the Entity bears the Function."@en ;
                    rdfs:label "Gain of Function"@en .
@@ -1892,8 +1892,8 @@ cco:IncreaseOfDisposition rdf:type owl:Class ;
 
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/IncreaseOfFunction
 cco:IncreaseOfFunction rdf:type owl:Class ;
-                       rdfs:subClassOf cco:IncreaseOfRealizableEntity ;
-                       cco:definition "An Increase of Realizable Entity in which some Independent Continuant has an increase of some Function that it bears."@en ;
+                       rdfs:subClassOf cco:IncreaseOfDisposition ;
+                       cco:definition "An Increase of Disposition in which some Independent Continuant has an increase of some Function that it bears."@en ;
                        cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/EventOntology"^^xsd:anyURI ;
                        rdfs:label "Increase of Function"@en .
 
@@ -2025,8 +2025,8 @@ cco:LossOfDisposition rdf:type owl:Class ;
 
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/LossOfFunction
 cco:LossOfFunction rdf:type owl:Class ;
-                   rdfs:subClassOf cco:LossOfRealizableEntity ;
-                   cco:definition "A Loss of Realizable Entity in which some Independent Continuant ceases to be the bearer of some Function."@en ;
+                   rdfs:subClassOf cco:LossOfDisposition ;
+                   cco:definition "A Loss of Disposition in which some Independent Continuant ceases to be the bearer of some Function."@en ;
                    cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/EventOntology"^^xsd:anyURI ;
                    rdfs:label "Loss of Function"@en .