assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:2673 IAO:0000115 A nephroma that is characterized as a localized, well-circumscribed multilocular tumor lined by hobnail epithelium. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.pathologyoutlines.com/topic/kidneytumorcysticnephroma.html""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/27831959""}]}"