assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_53018  rdfs:label       2,4-dinitrophenyl group  xsd:string  
1          0           graph  obo:CHEBI_53018  oio:id           CHEBI:53018              xsd:string  
1          0           graph  obo:CHEBI_53018  rdfs:subClassOf  obo:CHEBI_33249          _IRI        
1          0           graph  obo:CHEBI_53018  rdf:type         owl:Class                _IRI