assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_33853  rdfs:label       phenols          xsd:string  
1          0           graph  obo:CHEBI_33853  oio:id           CHEBI:33853      xsd:string  
1          0           graph  obo:CHEBI_33853  rdfs:subClassOf  obo:CHEBI_33822  _IRI        
1          0           graph  obo:CHEBI_33853  rdfs:subClassOf  obo:CHEBI_33659  _IRI        
1          0           graph  obo:CHEBI_33853  rdf:type         owl:Class        _IRI