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

<http://www.irandoc.acir/onto/irandoc/NEMA000578>
  skos:prefLabel "soils"@en, "خاک‌ها"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0007775> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007781>
  skos:prefLabel "ماسه"@fa, "sand"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007775> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007775>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007781> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0007791>, <http://www.irandoc.acir/onto/irandoc/NEMA000578> ;
  skos:prefLabel "شن"@fa, "gravel"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0007791>
  skos:prefLabel "مصالح ساختمانی"@fa, "construction materials"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0007775> .