assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_26218  rdfs:label       potassium salt   xsd:string  
1          0           graph  obo:CHEBI_26218  oio:id           CHEBI:26218      xsd:string  
1          0           graph  obo:CHEBI_26218  rdfs:subClassOf  obo:CHEBI_35479  _IRI        
1          0           graph  obo:CHEBI_26218  rdfs:subClassOf  obo:CHEBI_26217  _IRI        
1          0           graph  obo:CHEBI_26218  rdf:type         owl:Class        _IRI