assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:0080615 IAO:0000115 A kidney benign neoplasm that is located_in the kidney cortex. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.stjude.org/disease/nephroma.html""}]}"