assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_88184  rdfs:label       metal allergen   xsd:string  
1          0           graph  obo:CHEBI_88184  oio:id           CHEBI:88184      xsd:string  
1          0           graph  obo:CHEBI_88184  rdfs:subClassOf  obo:CHEBI_33521  _IRI        
1          0           graph  obo:CHEBI_88184  rdf:type         owl:Class        _IRI