assertion  retraction  graph  subject       predicate    object                                                                                                                      datatype    annotation
1          0           graph  DOID:0050932  IAO:0000115  A lung carcinoma that has_material_basis_in a combination of squamous cells, mucus secreting cells and intermediate cells.  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/Mucoepidermoid_carcinoma""}]}"