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

<http://astrothesaurus.org/uat/504>
  skos:broader <http://astrothesaurus.org/uat/89> ;
  skos:prefLabel "Extended radiation sources"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/89>
  skos:prefLabel "Astronomical radiation sources"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/504> .