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

<http://www.irandoc.acir/onto/irandoc/insp0008086>
  skos:prefLabel "Materials"@en, "مواد"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0007730> .

<http://www.irandoc.acir/onto/irandoc/insp0009727>
  skos:prefLabel "Aluminium compounds"@en, "ترکیبات آلومینیم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0007730> .

<http://www.irandoc.acir/onto/irandoc/insp0006462>
  skos:prefLabel "Corundum"@en, "کوراندوم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0007730> .

<http://www.irandoc.acir/onto/irandoc/insp0007730>
  skos:altLabel "bayer process"@en ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0006462> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0008086>, <http://www.irandoc.acir/onto/irandoc/insp0009727> ;
  skos:prefLabel "Alumina"@en, "آلومین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .