assertion  retraction  graph  subject          predicate        object                     datatype    annotation
1          0           graph  obo:CHEBI_33659  rdfs:label       organic aromatic compound  xsd:string  
1          0           graph  obo:CHEBI_33659  oio:id           CHEBI:33659                xsd:string  
1          0           graph  obo:CHEBI_33659  rdfs:subClassOf  obo:CHEBI_33832            _IRI        
1          0           graph  obo:CHEBI_33659  rdfs:subClassOf  obo:CHEBI_33655            _IRI        
1          0           graph  obo:CHEBI_33659  rdf:type         owl:Class                  _IRI