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

<http://www.irandoc.acir/onto/irandoc/NEMA0004750>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0004749> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0004751> ;
  skos:prefLabel "متالوژی آهن و فولاد"@fa, "iron & steel metallurgy"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0004749>
  skos:prefLabel "steel making"@en, "فولادسازی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0004750> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004751>
  skos:prefLabel "فناوری متالورژی"@fa, "metallurgical technology"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0004750> .