assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_24833  rdfs:label       oxoacid          xsd:string  
1          0           graph  obo:CHEBI_24833  oio:id           CHEBI:24833      xsd:string  
1          0           graph  obo:CHEBI_24833  rdfs:subClassOf  obo:CHEBI_24651  _IRI        
1          0           graph  obo:CHEBI_24833  rdf:type         owl:Class        _IRI