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

<http://www.irandoc.acir/onto/irandoc/insp0007615>
  skos:prefLabel "Fuzzy set theory"@en, "نظریه مجموعه فازی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007622> .

<http://www.irandoc.acir/onto/irandoc/insp0007623>
  skos:prefLabel "Set theory"@en, "نظریه مجموعه‌ها"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0007622> .

<http://www.irandoc.acir/onto/irandoc/insp0007622>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007615>, <http://www.irandoc.acir/onto/irandoc/insp000438> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0007623> ;
  skos:prefLabel "Rough set theory"@en, "نظریه مجموعه ناهنجار"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp000438>
  skos:prefLabel "Uncertain system"@en, "سامانه نامعلوم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007622> .