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

<http://www.irandoc.acir/onto/irandoc/NEMA0004538>
  skos:prefLabel "پاداکسنده‌ها"@fa, "antioxidants"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0002587> .

<http://www.irandoc.acir/onto/irandoc/NEMA0002587>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004538> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0002616> ;
  skos:prefLabel "افزودنی‌های سوخت"@fa, "fuel additives"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0002616>
  skos:prefLabel "سوخت‌ها"@fa, "fuels"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0002587> .