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

<http://www.irandoc.acir/onto/irandoc/insp0010524>
  skos:prefLabel "Liquid helium"@en, "هلیم مایع"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp000192> .

<http://www.irandoc.acir/onto/irandoc/insp000192>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp000319>, <http://www.irandoc.acir/onto/irandoc/insp0010524>, <http://www.irandoc.acir/onto/irandoc/insp0010523> ;
  a skos:Concept, <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp000195> ;
  skos:prefLabel "انتشار صوتی هلیم مایع"@fa, "Liquid helium sound propagation"@en ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp000190>, <http://www.irandoc.acir/onto/irandoc/insp000191> .

<http://www.irandoc.acir/onto/irandoc/insp000190>
  skos:prefLabel "Second sound"@en, "صوت ثانوی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp000192> .

<http://www.irandoc.acir/onto/irandoc/insp000195>
  skos:prefLabel "Acoustic wave propagation"@en, "انتشار موج آکوستیکی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp000192> .

<http://www.irandoc.acir/onto/irandoc/insp000319>
  skos:prefLabel "Acoustic wave velocity"@en, "سرعت موج آکوستیکی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp000192> .

<http://www.irandoc.acir/onto/irandoc/insp0010523>
  skos:prefLabel "Liquid helium-4"@en, "هلیم مایع-4"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp000192> .

<http://www.irandoc.acir/onto/irandoc/insp000191>
  skos:prefLabel "Zero sound"@en, "صوت صفر"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp000192> .