assertion  retraction  graph  subject          predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_33709  rdfs:subClassOf  obo:CHEBI_50047  _IRI      
1          0           graph  obo:CHEBI_50996  rdfs:subClassOf  obo:CHEBI_50047  _IRI      
1          0           graph  obo:CHEBI_50995  rdfs:subClassOf  obo:CHEBI_50047  _IRI      
1          0           graph  obo:CHEBI_32952  rdfs:subClassOf  obo:CHEBI_50047  _IRI      
1          0           graph  obo:CHEBI_33860  rdfs:subClassOf  obo:CHEBI_50047  _IRI      
1          0           graph  obo:CHEBI_88061  rdfs:subClassOf  obo:CHEBI_50047  _IRI