diff --git a/src/cco-extensions/ModalRelationOntology.ttl b/src/cco-extensions/ModalRelationOntology.ttl
index 5339f3b..abf0ab2 100644
--- a/src/cco-extensions/ModalRelationOntology.ttl
+++ b/src/cco-extensions/ModalRelationOntology.ttl
@@ -2559,6 +2559,8 @@ mro:ont00001961 rdf:type owl:ObjectProperty ;
 ###  https://www.commoncoreontologies.org/mro/ont00001962
 mro:ont00001962 rdf:type owl:ObjectProperty ;
                 rdfs:subPropertyOf mro:ont00001819 ;
+                rdfs:domain obo:BFO_0000015 ;
+                rdfs:range obo:BFO_0000015 ;
                 rdfs:label "process started by"@en ;
                 <http://www.w3.org/2004/02/skos/core#definition> "x process_started_by y iff x and y are instances of processes, and x is caused_by y, and i is an instance of a temporal instant, and r is an instant of a temporal interval, and x has starting instance i, and y occurs on r, and r interval contains i."@en ;
                 <http://www.w3.org/2004/02/skos/core#scopeNote> "A process x is started by another process y when y causes x while y is still occurring."@en ;