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

<http://www.irandoc.acir/onto/irandoc/insp0004891>
  skos:prefLabel "Photon echo"@en, "پژواک فوتونی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0004892> .

<http://www.irandoc.acir/onto/irandoc/insp0004892>
  skos:altLabel "optical nutation"@en ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004891> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0004912> ;
  skos:prefLabel "Optical coherent transient"@en, "حالت گذرای همدوس نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp0004912>
  skos:prefLabel "اپتیک غیرخطی"@fa, "Nonlinear optics"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004892> .