assertion retraction graph subject predicate object datatype annotation 1 0 graph NCBITaxon:235544 rdfs:label Norovirus genogroup 1 isolates xsd:string 1 0 graph NCBITaxon:235544 rdfs:subClassOf OBI:0100026 _IRI 1 0 graph NCBITaxon:235544 rdf:type owl:Class _IRI