assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_23132  rdfs:label       chlorobenzenes   xsd:string  
1          0           graph  obo:CHEBI_23132  oio:id           CHEBI:23132      xsd:string  
1          0           graph  obo:CHEBI_23132  rdfs:subClassOf  obo:CHEBI_36683  _IRI        
1          0           graph  obo:CHEBI_23132  rdfs:subClassOf  obo:CHEBI_22712  _IRI        
1          0           graph  obo:CHEBI_23132  rdf:type         owl:Class        _IRI