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

<http://www.irandoc.acir/onto/irandoc/AEM000301>
  skos:related <http://www.irandoc.acir/onto/irandoc/AEM000186> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/AEM000304> ;
  skos:prefLabel "Environmental pollution"@en, "آلودگی زیست‌محیطی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/AEM000304>
  skos:prefLabel "Pollution"@en, "آلودگی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/AEM000301> .

<http://www.irandoc.acir/onto/irandoc/AEM000186>
  skos:prefLabel "Environment"@en, "محیط زیست"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/AEM000301> .