assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_33247  rdfs:label       organic group    xsd:string  
1          0           graph  obo:CHEBI_33247  oio:id           CHEBI:33247      xsd:string  
1          0           graph  obo:CHEBI_33247  rdfs:subClassOf  obo:CHEBI_24433  _IRI        
1          0           graph  obo:CHEBI_33247  rdf:type         owl:Class        _IRI