assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_27638  rdfs:label       cobalt atom      xsd:string  
1          0           graph  obo:CHEBI_27638  oio:id           CHEBI:27638      xsd:string  
1          0           graph  obo:CHEBI_27638  rdfs:subClassOf  obo:CHEBI_88184  _IRI        
1          0           graph  obo:CHEBI_27638  rdfs:subClassOf  obo:CHEBI_33358  _IRI        
1          0           graph  obo:CHEBI_27638  rdf:type         owl:Class        _IRI