assertion  retraction  graph  subject          predicate        object                  datatype    annotation
1          0           graph  obo:CHEBI_17792  rdfs:label       organohalogen compound  xsd:string  
1          0           graph  obo:CHEBI_17792  oio:id           CHEBI:17792             xsd:string  
1          0           graph  obo:CHEBI_17792  rdfs:subClassOf  obo:CHEBI_37578         _IRI        
1          0           graph  obo:CHEBI_17792  rdfs:subClassOf  obo:CHEBI_33285         _IRI        
1          0           graph  obo:CHEBI_17792  rdf:type         owl:Class               _IRI