assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_24431  rdfs:label       chemical entity  xsd:string  
1          0           graph  obo:CHEBI_24431  oio:id           CHEBI:24431      xsd:string  
1          0           graph  obo:CHEBI_24431  rdfs:subClassOf  obo:doid#chebi   _IRI        
1          0           graph  obo:CHEBI_24431  rdf:type         owl:Class        _IRI