assertion  retraction  graph  subject    predicate    object                                                                                                                                             datatype    annotation
1          0           graph  DOID:5074  IAO:0000115  A high grade glioma that is derived from ependymal cells, a type of glial cell, located_in ventricle lining within the central part of the brain.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.org/Cancer/BrainCNSTumorsinAdults/DetailedGuide/brain-and-spinal-cord-tumors-in-adults-what-are-brain-spinal-tumors""}]}"