assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_22315  rdfs:label       alkaloid         xsd:string  
1          0           graph  obo:CHEBI_22315  oio:id           CHEBI:22315      xsd:string  
1          0           graph  obo:CHEBI_22315  rdfs:subClassOf  obo:CHEBI_35352  _IRI        
1          0           graph  obo:CHEBI_22315  rdf:type         owl:Class        _IRI