assertion  retraction  graph  subject    predicate    object                                                                                                     datatype    annotation
1          0           graph  DOID:6214  IAO:0000115  An ovary epithelial cancer that is characterized by the presence of finger-like projections on histology.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://acsjournals.onlinelibrary.wiley.com/doi/pdf/10.3322/canjclin.16.4.171""}]}"