assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_26822  rdfs:label       sulfide          xsd:string  
1          0           graph  obo:CHEBI_26822  oio:id           CHEBI:26822      xsd:string  
1          0           graph  obo:CHEBI_26822  rdfs:subClassOf  obo:CHEBI_26835  _IRI        
1          0           graph  obo:CHEBI_26822  rdf:type         owl:Class        _IRI