@prefix envthes: <http://vocabs.lter-europe.net/EnvThes/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

envthes:30410 skos:narrower envthes:20296 .
envthes:20296
  skos:prefLabel "global positioning system"@en ;
  a skos:Concept ;
  skos:broader envthes:30410 .