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

<http://www.irandoc.acir/onto/irandoc/NEMA0001812>
  skos:prefLabel "دوره سه‌ماهه"@fa, "trimester"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0008874> .

<http://www.irandoc.acir/onto/irandoc/NEMA0008874>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0001812> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0008883> ;
  skos:prefLabel "سه‌ماهه"@fa, "quarterly"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0008883>
  skos:prefLabel "تناوب"@fa, "periodicity"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0008874> .