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

<http://astrothesaurus.org/uat/1817>
  skos:broader <http://astrothesaurus.org/uat/1810> ;
  skos:prefLabel "X-ray identification"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/1810>
  skos:prefLabel "X-ray astronomy"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1817> .