assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_35267  rdfs:label       quaternary ammonium ion  xsd:string  
1          0           graph  obo:CHEBI_35267  oio:id           CHEBI:35267              xsd:string  
1          0           graph  obo:CHEBI_35267  rdfs:subClassOf  obo:CHEBI_35274          _IRI        
1          0           graph  obo:CHEBI_35267  rdfs:subClassOf  obo:CHEBI_25697          _IRI        
1          0           graph  obo:CHEBI_35267  rdf:type         owl:Class                _IRI