assertion  retraction  graph  subject           predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_161680  rdfs:label       aztreonam        xsd:string  
1          0           graph  obo:CHEBI_161680  oio:id           CHEBI:161680     xsd:string  
1          0           graph  obo:CHEBI_161680  rdfs:subClassOf  obo:CHEBI_88225  _IRI        
1          0           graph  obo:CHEBI_161680  rdfs:subClassOf  obo:CHEBI_50695  _IRI        
1          0           graph  obo:CHEBI_161680  rdf:type         owl:Class        _IRI