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

<http://www.irandoc.acir/onto/irandoc/insp0004843>
  skos:prefLabel "Phototube"@en, "لامپ فوتونی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011930> .

<http://www.irandoc.acir/onto/irandoc/insp0004166>
  skos:prefLabel "Positive column"@en, "ستون مثبت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0011930> .

<http://www.irandoc.acir/onto/irandoc/insp0011964>
  skos:prefLabel "Electron tube"@en, "لامپ الکترونی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0011930> .

<http://www.irandoc.acir/onto/irandoc/insp0011930>
  skos:altLabel "dekatrons"@en ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004843> ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004166> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011964> ;
  skos:prefLabel "Cold-cathode tube"@en, "لامپ کاتد-سرد"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .