assertion  retraction  graph  subject         predicate        object            datatype    annotation
1          0           graph  NCBITaxon:8016  rdfs:label       Oncorhynchus      xsd:string  
1          0           graph  NCBITaxon:8016  rdfs:subClassOf  NCBITaxon:504568  _IRI        
1          0           graph  NCBITaxon:8016  rdf:type         owl:Class         _IRI