@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

psr: a skos:ConceptScheme .
psr:-F22KVPCN-G
  skos:narrower psr:-VLZHR8X9-B ;
  dc:created "2023-07-03"^^xsd:date ;
  dc:modified "2023-07-03"^^xsd:date ;
  a skos:Concept ;
  skos:inScheme psr: ;
  skos:broader psr:-MP25S0Z4-Q ;
  skos:prefLabel "Cassini oval"@en, "ovale de Cassini"@fr .

psr:-MP25S0Z4-Q
  skos:prefLabel "courbe quartique"@fr, "quartic plane curve"@en ;
  a skos:Concept ;
  skos:narrower psr:-F22KVPCN-G .

psr:-VLZHR8X9-B
  skos:prefLabel "lemniscate de Bernoulli"@fr, "lemniscate of Bernoulli"@en ;
  a skos:Concept ;
  skos:broader psr:-F22KVPCN-G .