assertion  retraction  graph  subject         predicate        object            datatype    annotation
1          0           graph  NCBITaxon:3980  rdfs:label       Hevea             xsd:string  
1          0           graph  NCBITaxon:3980  rdfs:subClassOf  NCBITaxon:235882  _IRI        
1          0           graph  NCBITaxon:3980  rdf:type         owl:Class         _IRI