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

<http://www.irandoc.acir/onto/irandoc/NEMA000552>
  skos:prefLabel "واحدهای صنعتی"@fa, "industrial plants"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA000543> .

<http://www.irandoc.acir/onto/irandoc/NEMA0003655>
  skos:prefLabel "فراورده‌های نفتی"@fa, "petroleum products"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA000543> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004966>
  skos:prefLabel "تصفیه نفت"@fa, "petroleum refining"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA000543> .

<http://www.irandoc.acir/onto/irandoc/NEMA0005873>
  skos:prefLabel "صنعت نفت"@fa, "petroleum industry"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA000543> .

<http://www.irandoc.acir/onto/irandoc/NEMA000543>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0005873>, <http://www.irandoc.acir/onto/irandoc/NEMA0004966>, <http://www.irandoc.acir/onto/irandoc/NEMA0003655> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA000552> ;
  skos:prefLabel "پالایشگاه‌های نفت"@fa, "petroleum refineries"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .