assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_27081  rdfs:label       transition element atom  xsd:string  
1          0           graph  obo:CHEBI_27081  oio:id           CHEBI:27081              xsd:string  
1          0           graph  obo:CHEBI_27081  rdfs:subClassOf  obo:CHEBI_33521          _IRI        
1          0           graph  obo:CHEBI_27081  rdf:type         owl:Class                _IRI