assertion  retraction  graph  subject    predicate    object                                                                                                                              datatype    annotation
1          0           graph  DOID:3369  IAO:0000115  A connective tissue cancer that has_material_basis_in neural crest cells derives_from undeveloped, undifferentiated neuroectoderm.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Primitive_neuroectodermal_tumor""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/dictionary?cdrid=383924""}]}"