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

<http://www.irandoc.acir/onto/irandoc/INSP0011271>
  skos:broader <http://www.irandoc.acir/onto/irandoc/INSP0011278>, <http://www.irandoc.acir/onto/irandoc/INSP0004545> ;
  skos:prefLabel "phononic crystal"@en, "بلور فونونیک"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/INSP0011278>
  skos:prefLabel "phonon"@en, "فونون"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0011271> .

<http://www.irandoc.acir/onto/irandoc/INSP0004545>
  skos:prefLabel "periodic structure"@en, "ساختار دوره‌ای"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0011271> .