assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_26191  rdfs:label       polyol           xsd:string  
1          0           graph  obo:CHEBI_26191  oio:id           CHEBI:26191      xsd:string  
1          0           graph  obo:CHEBI_26191  rdfs:subClassOf  obo:CHEBI_33822  _IRI        
1          0           graph  obo:CHEBI_26191  rdf:type         owl:Class        _IRI