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

<http://www.irandoc.acir/onto/irandoc/hlt000900>
  skos:related <http://www.irandoc.acir/onto/irandoc/hlt000983> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/hlt000912> ;
  skos:prefLabel "مطالعه زیست‌محیطی"@fa, "environmental study"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/hlt000912>
  skos:prefLabel "research"@en, "پژوهش"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/hlt000900> .

<http://www.irandoc.acir/onto/irandoc/hlt000983>
  skos:prefLabel "محیط ‌زیست"@fa, "environment"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/hlt000900> .