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

<http://www.irandoc.acir/onto/irandoc/NEMA0007782>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004468>, <http://www.irandoc.acir/onto/irandoc/NEMA0007772>, <http://www.irandoc.acir/onto/irandoc/NEMA0008651> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0007791> ;
  skos:prefLabel "مصالح سقف‌سازی"@fa, "roofing materials"@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/NEMA0007782> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004468>
  skos:prefLabel "سقف‌ها"@fa, "roofs"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007782> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007772>
  skos:prefLabel "کاشی‌ها"@fa, "tiles"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007782> .

<http://www.irandoc.acir/onto/irandoc/NEMA0008651>
  skos:prefLabel "روی (فلز)"@fa, "zinc"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0007782> .