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

<http://www.irandoc.acir/onto/irandoc/NEMA0003444>
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0003453> ;
  skos:prefLabel "سیاه چاله‌ها"@fa, "black holes"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0003453>
  skos:prefLabel "اجرام آسمانی"@fa, "celestial bodies"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0003444> .