assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:5480 IAO:0000115 An ovarian benign neoplasm that is has_material_basis_in glandular and fibrous tissues, with a relatively large proportion of glands and is characterized by endometrial tissue. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/9631607""}]}"