assertion  retraction  graph  subject    predicate    object                                                                                                                                                         datatype    annotation
1          0           graph  DOID:1910  IAO:0000115  A vaginal cancer that is a primitive, malignant, germ cell tumor with histological features recapitulating various development phases of the normal yolk sac.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/30814243""}]}"