assertion  retraction  graph  subject         predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_9334  rdfs:label       sulfasalazine    xsd:string  
1          0           graph  obo:CHEBI_9334  oio:id           CHEBI:9334       xsd:string  
1          0           graph  obo:CHEBI_9334  rdfs:subClassOf  obo:CHEBI_35358  _IRI        
1          0           graph  obo:CHEBI_9334  rdfs:subClassOf  obo:CHEBI_26421  _IRI        
1          0           graph  obo:CHEBI_9334  rdfs:subClassOf  obo:CHEBI_22682  _IRI        
1          0           graph  obo:CHEBI_9334  rdf:type         owl:Class        _IRI