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

<http://astrothesaurus.org/uat/17>
  skos:prefLabel "Active galaxies"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/158> .

<http://astrothesaurus.org/uat/158>
  skos:altLabel "BL Lac objects"@en ;
  skos:broader <http://astrothesaurus.org/uat/17> ;
  skos:prefLabel "BL Lacertae objects"@en ;
  a skos:Concept .