assertion  retraction  graph  subject          predicate        object                             datatype    annotation
1          0           graph  obo:CHEBI_25693  rdfs:label       organic heteromonocyclic compound  xsd:string  
1          0           graph  obo:CHEBI_25693  oio:id           CHEBI:25693                        xsd:string  
1          0           graph  obo:CHEBI_25693  rdfs:subClassOf  obo:CHEBI_33670                    _IRI        
1          0           graph  obo:CHEBI_25693  rdfs:subClassOf  obo:CHEBI_24532                    _IRI        
1          0           graph  obo:CHEBI_25693  rdf:type         owl:Class                          _IRI