assertion  retraction  graph  subject    predicate        object                                                   datatype    annotation
1          0           graph  DOID:1612  rdfs:label       breast cancer                                            xsd:string  
1          0           graph  DOID:1612  IAO:0000115      A thoracic cancer that originates in the mammary gland.  xsd:string  
1          0           graph  DOID:1612  rdfs:subClassOf  DOID:162                                                 _IRI        
1          0           graph  DOID:1612  rdf:type         owl:Class                                                _IRI