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

<http://astrothesaurus.org/uat/159>
  skos:prefLabel "Black hole physics"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/161> .

<http://astrothesaurus.org/uat/161>
  skos:altLabel "Thermodynamics of black holes"@en ;
  skos:broader <http://astrothesaurus.org/uat/159> ;
  skos:prefLabel "Black hole thermodynamics"@en ;
  a skos:Concept .