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

<http://astrothesaurus.org/uat/59>
  skos:prefLabel "Apparent magnitude"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1760> .

<http://astrothesaurus.org/uat/1760>
  skos:altLabel "Period variation"@en, "Period-change"@en, "Periodically variable"@en, "Periodically-variable"@en ;
  skos:broader <http://astrothesaurus.org/uat/59> ;
  skos:prefLabel "Variable star period change"@en ;
  a skos:Concept .