assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:5381 IAO:0000115 A biliary tract benign neoplasm that results_in a small firm white nodule with multiple bile ducts that are located_in a fibrous stroma. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.sciencedirect.com/topics/medicine-and-dentistry/bile-duct-adenoma""}]}"