assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4283 IAO:0000115 A basal cell carcinoma that is located_in the anal margin. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.cancer.org/cancer/anal-cancer/about/what-is-anal-cancer.html""}]}"