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

<http://www.irandoc.acir/onto/irandoc/insp000112>
  skos:prefLabel "Directional coupler"@en, "جفتگر راستایی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004989> .

<http://www.irandoc.acir/onto/irandoc/insp0004989>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004880> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0004991>, <http://www.irandoc.acir/onto/irandoc/insp000112> ;
  skos:prefLabel "Optical directional coupler"@en, "جفتگر راستایی نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp0004880>
  skos:prefLabel "Integrated optics"@en, "نورشناسی یکپارچه"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004989> .

<http://www.irandoc.acir/onto/irandoc/insp0004991>
  skos:prefLabel "Optical coupler"@en, "جفتگر نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004989> .