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

<http://www.irandoc.acir/onto/irandoc/INSP0003555>
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0007828>, <http://www.irandoc.acir/onto/irandoc/INSP0003551>, <http://www.irandoc.acir/onto/irandoc/INSP0007787> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/INSP0003558>, <http://www.irandoc.acir/onto/irandoc/INSP0007931> ;
  skos:prefLabel "شیشه اپتیکی"@fa, "optical glass"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/INSP0007828>
  skos:prefLabel "الیاف نوری"@fa, "optical fibres"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0003555> .

<http://www.irandoc.acir/onto/irandoc/INSP0003558>
  skos:prefLabel "شیشه"@fa, "glass"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0003555> .

<http://www.irandoc.acir/onto/irandoc/INSP0007931>
  skos:prefLabel "مواد نوری"@fa, "optical materials"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0003555> .

<http://www.irandoc.acir/onto/irandoc/INSP0003551>
  skos:prefLabel "الیاف شیشه"@fa, "glass fibres"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0003555> .

<http://www.irandoc.acir/onto/irandoc/INSP0007787>
  skos:prefLabel "شیشه آلاییده نیم‌رسانا"@fa, "semiconductor doped glass"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0003555> .