assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_17522  rdfs:label       alditol          xsd:string  
1          0           graph  obo:CHEBI_17522  oio:id           CHEBI:17522      xsd:string  
1          0           graph  obo:CHEBI_17522  rdfs:subClassOf  obo:CHEBI_26191  _IRI        
1          0           graph  obo:CHEBI_17522  rdfs:subClassOf  obo:CHEBI_16646  _IRI        
1          0           graph  obo:CHEBI_17522  rdf:type         owl:Class        _IRI