assertion  retraction  graph  subject          predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_24835  rdfs:subClassOf  obo:CHEBI_23367  _IRI      
1          0           graph  obo:CHEBI_33579  rdfs:subClassOf  obo:CHEBI_23367  _IRI      
1          0           graph  obo:CHEBI_33259  rdfs:subClassOf  obo:CHEBI_23367  _IRI      
1          0           graph  obo:CHEBI_36357  rdfs:subClassOf  obo:CHEBI_23367  _IRI      
1          0           graph  obo:CHEBI_24870  rdfs:subClassOf  obo:CHEBI_23367  _IRI