assertion  retraction  graph  subject    predicate    object                                                                                                                                                                                                                            datatype    annotation
1          0           graph  DOID:7233  IAO:0000115  A central nervous system adult germ cell tumor that develops from mismigrational pluripotent embryonic cells that remain in the brain after birth, has_material_basis_in abnormally proliferating cells derives_from germ cells.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.cancer.gov/types/brain/patient/child-cns-embryonal-treatment-pdq""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/17997317""}]}"