assertion  retraction  graph  subject    predicate    object                                                    datatype    annotation
1          0           graph  DOID:4606  IAO:0000115  A biliary tract cancer that is located_in the bile duct.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/dictionary/?CdrID=527370""}]}"