: Eventhttp://purl.org/NET/c4dm/event.owl# Create a prefix for http://purl.org/NET/c4dm/event.owl# Hit Enter to save Double click to create a prefix | owl:equivalentClass | : WebDocumenthttp://www.bbc.co.uk/ontologies/bbc/ Create a prefix for http://www.bbc.co.uk/ontologies/bbc/ Hit Enter to save Double click to create a prefix |