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

<http://www.irandoc.acir/onto/irandoc/CHEM0006494>
  skos:prefLabel "ایزوتوپ"@fa, "isotope"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CHEM0006492> .

<http://www.irandoc.acir/onto/irandoc/CHEM0001863>
  skos:prefLabel "شیمی هسته‌ای"@fa, "nuclear chemistry"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHEM0006492> .

<http://www.irandoc.acir/onto/irandoc/CHEM0006492>
  skos:related <http://www.irandoc.acir/onto/irandoc/CHEM0001863> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/CHEM0006494> ;
  skos:prefLabel "ایزوتوپ‌ پایدار"@fa, "stable isotope"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .