assertion  retraction  graph  subject          predicate        object                                               datatype    annotation
1          0           graph  NCBITaxon:28344  rdfs:label       Porcine reproductive and respiratory syndrome virus  xsd:string  
1          0           graph  NCBITaxon:28344  rdfs:subClassOf  OBI:0100026                                          _IRI        
1          0           graph  NCBITaxon:28344  rdf:type         owl:Class                                            _IRI