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

<http://astrothesaurus.org/uat/1317>
  skos:broader <http://astrothesaurus.org/uat/813> ;
  skos:prefLabel "Quasar absorption line spectroscopy"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/813>
  skos:prefLabel "Intergalactic medium"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1317> .