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

<http://astrothesaurus.org/uat/827>
  skos:prefLabel "Interplanetary physics"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1239> .

<http://astrothesaurus.org/uat/1239>
  skos:altLabel "Pick-up ions"@en ;
  skos:broader <http://astrothesaurus.org/uat/827> ;
  skos:prefLabel "Pickup ions"@en ;
  a skos:Concept .