assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_17087  rdfs:label       ketone           xsd:string  
1          0           graph  obo:CHEBI_17087  oio:id           CHEBI:17087      xsd:string  
1          0           graph  obo:CHEBI_17087  rdfs:subClassOf  obo:CHEBI_36586  _IRI        
1          0           graph  obo:CHEBI_17087  rdf:type         owl:Class        _IRI