assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_32955  rdfs:label       epoxide          xsd:string  
1          0           graph  obo:CHEBI_32955  oio:id           CHEBI:32955      xsd:string  
1          0           graph  obo:CHEBI_32955  rdfs:subClassOf  obo:CHEBI_37407  _IRI        
1          0           graph  obo:CHEBI_32955  rdf:type         owl:Class        _IRI