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

<http://astrothesaurus.org/uat/1821>
  skos:broader <http://astrothesaurus.org/uat/1319> ;
  skos:prefLabel "X-ray quasars"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/1319>
  skos:prefLabel "Quasars"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1821> .