assertion  retraction  graph  subject         predicate        object               datatype    annotation
1          0           graph  NCBITaxon:1236  rdfs:label       Gammaproteobacteria  xsd:string  
1          0           graph  NCBITaxon:1236  rdfs:subClassOf  NCBITaxon:1224       _IRI        
1          0           graph  NCBITaxon:1236  rdf:type         owl:Class            _IRI