assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_33232  rdfs:label       application      xsd:string  
1          0           graph  obo:CHEBI_33232  oio:id           CHEBI:33232      xsd:string  
1          0           graph  obo:CHEBI_33232  rdfs:subClassOf  obo:CHEBI_50906  _IRI        
1          0           graph  obo:CHEBI_33232  rdf:type         owl:Class        _IRI