assertion retraction graph subject predicate object datatype annotation 1 0 graph ONTIE:0003656 rdf:type owl:Class _IRI 1 0 graph ONTIE:0003656 rdfs:label non infected mock-treated PBS-control xsd:string 1 0 graph ONTIE:0003656 IAO:0000234 CoVIC-DB xsd:string 1 0 graph ONTIE:0003656 rdfs:subClassOf COB:0000006 _IRI