assertion  retraction  graph  subject          predicate        object            datatype    annotation
1          0           graph  NCBITaxon:13451  rdfs:label       Corylus avellana  xsd:string  
1          0           graph  NCBITaxon:13451  rdfs:subClassOf  OBI:0100026       _IRI        
1          0           graph  NCBITaxon:13451  rdf:type         owl:Class         _IRI