assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:2784 IAO:0000115 A lung cancer that is located_in the lung and that arises from transformed cells of mesenchymal origin. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.sciencedirect.com/topics/medicine-and-dentistry/lung-sarcoma""}]}"