assertion  retraction  graph  subject         predicate        object          datatype    annotation
1          0           graph  NCBITaxon:6757  rdfs:label       Portunidae      xsd:string  
1          0           graph  NCBITaxon:6757  rdfs:subClassOf  NCBITaxon:6774  _IRI        
1          0           graph  NCBITaxon:6757  rdf:type         owl:Class       _IRI