assertion  retraction  graph  subject          predicate        object             datatype    annotation
1          0           graph  obo:CHEBI_33655  rdfs:label       aromatic compound  xsd:string  
1          0           graph  obo:CHEBI_33655  oio:id           CHEBI:33655        xsd:string  
1          0           graph  obo:CHEBI_33655  rdfs:subClassOf  obo:CHEBI_33595    _IRI        
1          0           graph  obo:CHEBI_33655  rdf:type         owl:Class          _IRI