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

<http://astrothesaurus.org/uat/1777>
  skos:altLabel "Visual binaries"@en ;
  skos:broader <http://astrothesaurus.org/uat/154> ;
  skos:prefLabel "Visual binary stars"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/154>
  skos:prefLabel "Binary stars"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1777> .