assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:9254 IAO:0000115 A leukemia that results_in an overwhelming number of tissue mast cells located_in peripheral blood. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://medical-dictionary.thefreedictionary.com/mast+cell+leukemia""}]}"