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

<http://www.irandoc.acir/onto/irandoc/NEMA0005177>
  skos:prefLabel "واپاشی پرتوزا"@fa, "radioactive decay"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0006800> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004753>
  skos:prefLabel "پدیده‌های طبیعی"@fa, "natural phenomena"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0006800> .

<http://www.irandoc.acir/onto/irandoc/NEMA0006800>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004753>, <http://www.irandoc.acir/onto/irandoc/NEMA0005177> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0006806> ;
  skos:prefLabel "پرتوزایی طبیعی"@fa, "natural radioactivity"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0006806>
  skos:prefLabel "پرتوزایی"@fa, "radioactivity"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0006800> .