assertion  retraction  graph  subject    predicate    object                                                                                                                     datatype    annotation
1          0           graph  DOID:6726  IAO:0000115  A malignant astrocytoma that is characterized as a low grade astrocytoma and has_material_basis_in neoplastic astrocytes.  xsd:string  "{""dce:type"":[{""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/Fibrillary_astrocytoma""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/dictionary?CdrID=45602""}]}"