assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_28593  rdfs:label       quinidine        xsd:string  
1          0           graph  obo:CHEBI_28593  oio:id           CHEBI:28593      xsd:string  
1          0           graph  obo:CHEBI_28593  rdfs:subClassOf  obo:CHEBI_51323  _IRI        
1          0           graph  obo:CHEBI_28593  rdf:type         owl:Class        _IRI