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

<http://astrothesaurus.org/uat/1549>
  skos:prefLabel "Space vehicles"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/698> .

<http://astrothesaurus.org/uat/698>
  skos:altLabel "Hall current thrusters"@en, "Hall effect thrusters"@en ;
  skos:broader <http://astrothesaurus.org/uat/1549> ;
  skos:prefLabel "Hall thrusters"@en ;
  a skos:Concept .