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

<http://astrothesaurus.org/uat/1250>
  skos:altLabel "Nuclei of planetary nebulae"@en, "Nucleus of planetary nebula"@en, "Planetary nebula nuclei"@en ;
  skos:broader <http://astrothesaurus.org/uat/1249> ;
  skos:prefLabel "Planetary nebulae nuclei"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/1249>
  skos:prefLabel "Planetary nebulae"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1250> .