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

<http://astrothesaurus.org/uat/450>
  skos:broader <http://astrothesaurus.org/uat/641> ;
  skos:prefLabel "Einstein field equations"@en ;
  a skos:Concept .

<http://astrothesaurus.org/uat/641>
  skos:prefLabel "General relativity"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/450> .