assertion retraction graph subject predicate object datatype annotation 1 0 graph NCBITaxon:493803 rdfs:label Merkel cell polyomavirus xsd:string 1 0 graph NCBITaxon:493803 rdfs:subClassOf OBI:0100026 _IRI 1 0 graph NCBITaxon:493803 rdf:type owl:Class _IRI