assertion  retraction  graph  subject           predicate        object           datatype  annotation
1          0           graph  obo:CHEBI_22723   rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_140310  rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_51683   rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_22562   rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_22682   rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_6456    rdfs:subClassOf  obo:CHEBI_22712  _IRI      
1          0           graph  obo:CHEBI_23132   rdfs:subClassOf  obo:CHEBI_22712  _IRI