assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_24866  rdfs:label       salt             xsd:string  
1          0           graph  obo:CHEBI_24866  oio:id           CHEBI:24866      xsd:string  
1          0           graph  obo:CHEBI_24866  rdfs:subClassOf  obo:CHEBI_37577  _IRI        
1          0           graph  obo:CHEBI_24866  rdf:type         owl:Class        _IRI