assertion  retraction  graph  subject    predicate    object                                                                        datatype    annotation
1          0           graph  DOID:6634  IAO:0000115  A choriocarcinoma that is located in the central nervous system of an adult.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://en.wikipedia.org/wiki/Choriocarcinoma""}]}"