assertion  retraction  graph  subject          predicate        object                    datatype    annotation
1          0           graph  obo:CHEBI_50995  rdfs:label       secondary amino compound  xsd:string  
1          0           graph  obo:CHEBI_50995  oio:id           CHEBI:50995               xsd:string  
1          0           graph  obo:CHEBI_50995  rdfs:subClassOf  obo:CHEBI_50047           _IRI        
1          0           graph  obo:CHEBI_50995  rdf:type         owl:Class                 _IRI