assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_25697  rdfs:label       organic cation   xsd:string  
1          0           graph  obo:CHEBI_25697  oio:id           CHEBI:25697      xsd:string  
1          0           graph  obo:CHEBI_25697  rdfs:subClassOf  obo:CHEBI_36916  _IRI        
1          0           graph  obo:CHEBI_25697  rdfs:subClassOf  obo:CHEBI_25699  _IRI        
1          0           graph  obo:CHEBI_25697  rdf:type         owl:Class        _IRI