assertion  retraction  graph  subject          predicate        object                datatype    annotation
1          0           graph  obo:CHEBI_33285  rdfs:label       heteroorganic entity  xsd:string  
1          0           graph  obo:CHEBI_33285  oio:id           CHEBI:33285           xsd:string  
1          0           graph  obo:CHEBI_33285  rdfs:subClassOf  obo:CHEBI_50860       _IRI        
1          0           graph  obo:CHEBI_33285  rdf:type         owl:Class             _IRI