assertion  retraction  graph  subject          predicate        object            datatype    annotation
1          0           graph  obo:CHEBI_27561  rdfs:label       oxirane           xsd:string  
1          0           graph  obo:CHEBI_27561  oio:id           CHEBI:27561       xsd:string  
1          0           graph  obo:CHEBI_27561  rdfs:subClassOf  obo:CHEBI_38104   _IRI        
1          0           graph  obo:CHEBI_27561  rdfs:subClassOf  obo:CHEBI_36389   _IRI        
1          0           graph  obo:CHEBI_27561  rdfs:subClassOf  obo:CHEBI_138675  _IRI        
1          0           graph  obo:CHEBI_27561  rdf:type         owl:Class         _IRI