assertion  retraction  graph  subject          predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_36358  rdfs:subClassOf  obo:CHEBI_36357  _IRI      
1          0           graph  obo:CHEBI_25367  rdfs:subClassOf  obo:CHEBI_36357  _IRI      
1          0           graph  obo:CHEBI_37577  rdfs:subClassOf  obo:CHEBI_36357  _IRI