assertion  retraction  graph  subject    predicate    object                                                                                                                           datatype    annotation
1          0           graph  DOID:4053  IAO:0000115  A rectum sarcoma that is located_in the rectum in which the cancer cells are thought to arise from skeletal muscle progenitors.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Rhabdomyosarcoma""}]}"