20260318-0 OWL OWL 2012-09-01 2025-02-11 2012-09-01 OWL 2014-03-12 2014-02-19 Web Ontology Language OWL – Web Ontology Language – is a family of knowledge representation languages for authoring ontologies. application/owl+xml .rdf .owx .owl OWL false OWL 2012-09-01 OWL true https://www.iana.org/assignments/media-types/application/rdf+xml