assertion  retraction  graph  subject    predicate    object                                                                                                                               datatype    annotation
1          0           graph  DOID:5520  IAO:0000115  A head and neck carcinoma that has_material_basis_in squamous cells that line the moist, mucosal surfaces inside the head and neck.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Head_and_neck_cancer#Squamous_cell_carcinoma""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/cancertopics/factsheet/Sites-Types/head-and-neck""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/dictionary?CdrID=597171""}]}"