assertion  retraction  graph  subject          predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_35358  rdfs:subClassOf  obo:CHEBI_33261  _IRI      
1          0           graph  obo:CHEBI_50492  rdfs:subClassOf  obo:CHEBI_33261  _IRI      
1          0           graph  obo:CHEBI_38106  rdfs:subClassOf  obo:CHEBI_33261  _IRI      
1          0           graph  obo:CHEBI_35850  rdfs:subClassOf  obo:CHEBI_33261  _IRI      
1          0           graph  obo:CHEBI_16385  rdfs:subClassOf  obo:CHEBI_33261  _IRI