assertion  retraction  graph  subject          predicate        object                       datatype    annotation
1          0           graph  obo:CHEBI_22750  rdfs:label       benzylisoquinoline alkaloid  xsd:string  
1          0           graph  obo:CHEBI_22750  oio:id           CHEBI:22750                  xsd:string  
1          0           graph  obo:CHEBI_22750  rdfs:subClassOf  obo:CHEBI_24921              _IRI        
1          0           graph  obo:CHEBI_22750  rdf:type         owl:Class                    _IRI