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

<http://astrothesaurus.org/uat/1792>
  skos:prefLabel "Waveband photometry"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1820> .

<http://astrothesaurus.org/uat/1820>
  skos:broader <http://astrothesaurus.org/uat/1792> ;
  skos:prefLabel "X-ray photometry"@en ;
  skos:narrower <http://astrothesaurus.org/uat/700> ;
  a skos:Concept .

<http://astrothesaurus.org/uat/700>
  skos:prefLabel "Hardness ratio"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/1820> .