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

<http://www.irandoc.acir/onto/irandoc/HLT000063>
  skos:related <http://www.irandoc.acir/onto/irandoc/HLT000400> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/HLT000064> ;
  skos:prefLabel "Pesticide"@en, "آفت‌کش"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/HLT000400>
  skos:prefLabel "Agricultural pollution"@en, "آلودگی کشاورزی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/HLT000063> .

<http://www.irandoc.acir/onto/irandoc/HLT000064>
  skos:prefLabel "Hazardous substance"@en, "ماده پرخطر"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/HLT000063> .