assertion  retraction  graph  subject          predicate        object                                   datatype    annotation
1          0           graph  obo:CHEBI_35552  rdfs:label       heterocyclic organic fundamental parent  xsd:string  
1          0           graph  obo:CHEBI_35552  oio:id           CHEBI:35552                              xsd:string  
1          0           graph  obo:CHEBI_35552  rdfs:subClassOf  obo:CHEBI_33245                          _IRI        
1          0           graph  obo:CHEBI_35552  rdf:type         owl:Class                                _IRI