assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_32952  rdfs:label       amine            xsd:string  
1          0           graph  obo:CHEBI_32952  oio:id           CHEBI:32952      xsd:string  
1          0           graph  obo:CHEBI_32952  rdfs:subClassOf  obo:CHEBI_50047  _IRI        
1          0           graph  obo:CHEBI_32952  rdf:type         owl:Class        _IRI