assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_24531  rdfs:label       heterocyclic antibiotic  xsd:string  
1          0           graph  obo:CHEBI_24531  oio:id           CHEBI:24531              xsd:string  
1          0           graph  obo:CHEBI_24531  rdfs:subClassOf  obo:CHEBI_24532          _IRI        
1          0           graph  obo:CHEBI_24531  rdf:type         owl:Class                _IRI