<https://w3id.org/framester/schema/necessaryRole> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <https://w3id.org/framester/schema/semanticRole> .
<https://w3id.org/framester/schema/necessaryRole> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#ObjectProperty> .