assertion  retraction  graph  subject          predicate        object                     datatype    annotation
1          0           graph  NCBITaxon:11757  rdfs:label       Mouse mammary tumor virus  xsd:string  
1          0           graph  NCBITaxon:11757  rdfs:subClassOf  OBI:0100026                _IRI        
1          0           graph  NCBITaxon:11757  rdf:type         owl:Class                  _IRI