assertion  retraction  graph  subject    predicate    object                                            datatype    annotation
1          0           graph  DOID:5099  IAO:0000115  An ear cancer that is located_in the middle ear.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://my.clevelandclinic.org/services/head-neck/diseases-conditions/tumors""}]}"