assertion  retraction  graph  subject          predicate        object              datatype    annotation
1          0           graph  obo:CHEBI_26509  rdfs:label       quinoline alkaloid  xsd:string  
1          0           graph  obo:CHEBI_26509  oio:id           CHEBI:26509         xsd:string  
1          0           graph  obo:CHEBI_26509  rdfs:subClassOf  obo:CHEBI_22315     _IRI        
1          0           graph  obo:CHEBI_26509  rdf:type         owl:Class           _IRI