assertion retraction graph subject predicate object datatype annotation 1 0 graph NCBITaxon:10798 rdfs:label Human parvovirus B19 xsd:string 1 0 graph NCBITaxon:10798 rdfs:subClassOf OBI:0100026 _IRI 1 0 graph NCBITaxon:10798 rdf:type owl:Class _IRI