assertion  retraction  graph  subject          predicate        object               datatype    annotation
1          0           graph  obo:CHEBI_88187  rdfs:label       penicillin allergen  xsd:string  
1          0           graph  obo:CHEBI_88187  oio:id           CHEBI:88187          xsd:string  
1          0           graph  obo:CHEBI_88187  rdfs:subClassOf  obo:CHEBI_17334      _IRI        
1          0           graph  obo:CHEBI_88187  rdf:type         owl:Class            _IRI