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

<http://www.irandoc.acir/onto/irandoc/insp0005059>
  skos:prefLabel "Operations research"@en, "تحقیق در عملیات"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0005044> .

<http://www.irandoc.acir/onto/irandoc/insp0005043>
  skos:prefLabel "Bin packing"@en, "بسته‌بندی بین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0005044> .

<http://www.irandoc.acir/onto/irandoc/insp0005044>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0005043> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0005059> ;
  skos:prefLabel "Knapsack problem"@en, "مشکل کوله‌پشتی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .