assertion  retraction  graph  subject    predicate    object                                                                                                                        datatype    annotation
1          0           graph  DOID:8731  IAO:0000115  A vascular cancer that is characterized by an encapsulated, firm round mass at the bifurcation of the common carotid artery.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.wrongdiagnosis.com/medical/carotid_body_tumor.htm""}]}"