assertion  retraction  graph  subject         predicate        object            datatype    annotation
1          0           graph  obo:CHEBI_9774  rdfs:label       tubocurarine      xsd:string  
1          0           graph  obo:CHEBI_9774  oio:id           CHEBI:9774        xsd:string  
1          0           graph  obo:CHEBI_9774  rdfs:subClassOf  obo:CHEBI_133004  _IRI        
1          0           graph  obo:CHEBI_9774  rdf:type         owl:Class         _IRI