assertion  retraction  graph  subject          predicate        object                                 datatype    annotation
1          0           graph  obo:CHEBI_36388  rdfs:label       saturated organic heterocyclic parent  xsd:string  
1          0           graph  obo:CHEBI_36388  oio:id           CHEBI:36388                            xsd:string  
1          0           graph  obo:CHEBI_36388  rdfs:subClassOf  obo:CHEBI_35552                        _IRI        
1          0           graph  obo:CHEBI_36388  rdf:type         owl:Class                              _IRI