assertion  retraction  graph  subject           predicate        object                 datatype    annotation
1          0           graph  obo:CHEBI_128458  rdfs:label       disodium cromoglycate  xsd:string  
1          0           graph  obo:CHEBI_128458  oio:id           CHEBI:128458           xsd:string  
1          0           graph  obo:CHEBI_128458  rdfs:subClassOf  obo:CHEBI_38700        _IRI        
1          0           graph  obo:CHEBI_128458  rdf:type         owl:Class              _IRI