assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:10021 IAO:0000115 A small intestine cancer that is located_in the beginning section of the small intestine. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Duodenal_cancer""}]}"