assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4072 IAO:0000115 An intestinal disease that is located_in the duodenum. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://medlineplus.gov/ency/article/002347.htm""}]}"