assertion  retraction  graph  subject         predicate        object                    datatype    annotation
1          0           graph  NCBITaxon:7742  rdfs:label       Vertebrata <vertebrates>  xsd:string  
1          0           graph  NCBITaxon:7742  rdfs:subClassOf  NCBITaxon:89593           _IRI        
1          0           graph  NCBITaxon:7742  rdf:type         owl:Class                 _IRI