assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_24867  rdfs:label       monoatomic ion   xsd:string  
1          0           graph  obo:CHEBI_24867  oio:id           CHEBI:24867      xsd:string  
1          0           graph  obo:CHEBI_24867  rdfs:subClassOf  obo:CHEBI_33238  _IRI        
1          0           graph  obo:CHEBI_24867  rdfs:subClassOf  obo:CHEBI_24870  _IRI        
1          0           graph  obo:CHEBI_24867  rdf:type         owl:Class        _IRI