@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://astrothesaurus.org/uat/204>
  skos:prefLabel "Catadioptric telescopes"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/177> .

<http://astrothesaurus.org/uat/177>
  skos:broader <http://astrothesaurus.org/uat/204> ;
  skos:prefLabel "Bouwers telescope"@en ;
  a skos:Concept .