assertion  retraction  graph  subject    predicate    object                                                                            datatype    annotation
1          0           graph  DOID:4918  IAO:0000115  A renal pelvis carcinoma that derives_from epithelial cells of glandular origin.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Adenocarcinoma""}]}"