assertion  retraction  graph  subject          predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_36709  rdfs:subClassOf  obo:CHEBI_33860  _IRI      
1          0           graph  obo:CHEBI_51402  rdfs:subClassOf  obo:CHEBI_33860  _IRI      
1          0           graph  obo:CHEBI_38338  rdfs:subClassOf  obo:CHEBI_33860  _IRI      
1          0           graph  obo:CHEBI_22562  rdfs:subClassOf  obo:CHEBI_33860  _IRI      
1          0           graph  obo:CHEBI_47381  rdfs:subClassOf  obo:CHEBI_33860  _IRI