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

<http://www.irandoc.acir/onto/irandoc/INSP0005250>
  skos:prefLabel "تقویت‌کننده"@fa, "amplifier"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0005228> .

<http://www.irandoc.acir/onto/irandoc/INSP0014777>
  skos:prefLabel "تقویت‌کننده بسامد شنیداری"@fa, "audio-frequency amplifier"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0005228> .

<http://www.irandoc.acir/onto/irandoc/INSP0005228>
  skos:related <http://www.irandoc.acir/onto/irandoc/INSP0014777> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/INSP0005250> ;
  skos:prefLabel "پیش‌تقویت‌کننده"@fa, "preamplifier"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .