assertion  retraction  graph  subject          predicate        object                    datatype    annotation
1          0           graph  obo:CHEBI_24471  rdfs:label       halogen molecular entity  xsd:string  
1          0           graph  obo:CHEBI_24471  oio:id           CHEBI:24471               xsd:string  
1          0           graph  obo:CHEBI_24471  rdfs:subClassOf  obo:CHEBI_33675           _IRI        
1          0           graph  obo:CHEBI_24471  rdf:type         owl:Class                 _IRI