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

<http://www.irandoc.acir/onto/irandoc/NEMA0003235>
  skos:prefLabel "عایق‌کاری صوتی"@fa, "acoustic insulation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007978> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007264>
  skos:prefLabel "محیط صوتی"@fa, "acoustic environment"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007978> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007979>
  skos:prefLabel "آلاینده‌ها"@fa, "pollutants"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0007978> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007978>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007264>, <http://www.irandoc.acir/onto/irandoc/NEMA0003235> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0007979> ;
  skos:prefLabel "صدا آزاری"@fa, "noise nuisance"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .