assertion  retraction  graph  subject       predicate    object                                                                                                                                                                                                                                           datatype    annotation
1          0           graph  DOID:0080905  IAO:0000115  A central nervous system germ cell tumor that is characterized by the presence of neuroblastic cells, the absence of ganglion cells, and the absence of a prominent Schwannian stroma formation and that arising from the cerebral hemispheres.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubmed.ncbi.nlm.nih.gov/29520437/""}]}"