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

<http://www.irandoc.acir/onto/irandoc/EIT0011575>
  skos:prefLabel "خالص‌سازی"@fa, "purification"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/EIT0011574> .

<http://www.irandoc.acir/onto/irandoc/EIT0011574>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/EIT0011573> ;
  skos:related <http://www.irandoc.acir/onto/irandoc/EIT0008775> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/EIT0011575> ;
  skos:prefLabel "خالص‌سازی سوخت"@fa, "fuel purification"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/EIT0008775>
  skos:prefLabel "fuel"@en, "سوخت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/EIT0011574> .

<http://www.irandoc.acir/onto/irandoc/EIT0011573>
  skos:prefLabel "خالص‌سازی سوخت گازی"@fa, "gas fuel purification"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/EIT0011574> .