assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:170 IAO:0000115 An organ system cancer located_in endocrine system that is characterized by uncontrolled cellular proliferation of the hormone producing glands of the endocrine system. 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/Endocrine_system""}]}"