@prefix kfp: <http://data.loterre.fr/ark:/67375/KFP> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix obo: <http://purl.obolibrary.org/obo/> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

kfp: a skos:ConceptScheme .
kfp:-PRBT7P9T-P
  owl:sameAs obo:CHEBI_30890 ;
  skos:hiddenLabel "1,5-naphthalenedisulfonic acid"@en, "Armstrong's acid"@en ;
  a skos:Concept ;
  skos:inScheme kfp: ;
  skos:broader kfp:-V3VR3SVZ-T ;
  skos:prefLabel "naphthalene-1,5-disulfonic acid"@en .

kfp:-
  a isothes:ConceptGroup ;
  skos:prefLabel "3_STAR"@en ;
  skos:member kfp:-PRBT7P9T-P .

kfp:-V3VR3SVZ-T
  skos:prefLabel "naphthalenesulfonic acid"@en ;
  a skos:Concept ;
  skos:narrower kfp:-PRBT7P9T-P .