assertion  retraction  graph  subject          predicate        object                    datatype    annotation
1          0           graph  obo:CHEBI_33859  rdfs:label       aromatic carboxylic acid  xsd:string  
1          0           graph  obo:CHEBI_33859  oio:id           CHEBI:33859               xsd:string  
1          0           graph  obo:CHEBI_33859  rdfs:subClassOf  obo:CHEBI_33659           _IRI        
1          0           graph  obo:CHEBI_33859  rdfs:subClassOf  obo:CHEBI_33575           _IRI        
1          0           graph  obo:CHEBI_33859  rdf:type         owl:Class                 _IRI