assertion  retraction  graph  subject         predicate        object         datatype    annotation
1          0           graph  NCBITaxon:8932  rdfs:label       Columba livia  xsd:string  
1          0           graph  NCBITaxon:8932  rdfs:subClassOf  OBI:0100026    _IRI        
1          0           graph  NCBITaxon:8932  rdf:type         owl:Class      _IRI