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

<http://astrothesaurus.org/uat/1389>
  skos:prefLabel "Relativistic fluid dynamics"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/1391> .

<http://astrothesaurus.org/uat/1391>
  skos:broader <http://astrothesaurus.org/uat/1393> ;
  skos:prefLabel "Relativistic mechanics"@en ;
  skos:narrower <http://astrothesaurus.org/uat/1389> ;
  a skos:Concept .

<http://astrothesaurus.org/uat/1393>
  skos:prefLabel "Relativity"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1391> .