assertion  retraction  graph  subject       predicate    object                                                                                                                                                                                                    datatype    annotation
1          0           graph  DOID:0060103  IAO:0000115  A central nervous system cancer of children and young adults that develops from neural crest cells located_in cerebrum, has_material_basis_in abnormally proliferating cells derives_from neuroectoderm.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0151465""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://en.wikipedia.org/wiki/Primitive_neuroectodermal_tumor""}]}"