assertion  retraction  graph  subject         predicate        object              datatype    annotation
1          0           graph  NCBITaxon:3981  rdfs:label       Hevea brasiliensis  xsd:string  
1          0           graph  NCBITaxon:3981  rdfs:subClassOf  OBI:0100026         _IRI        
1          0           graph  NCBITaxon:3981  rdf:type         owl:Class           _IRI