assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:6407 IAO:0000115 An ovarian papillary neoplasm that is an exophytic growth with bland, serous-type epitheliumon the surface of the ovary. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/439088""}]}"