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

<http://www.irandoc.acir/onto/irandoc/INSP0013117>
  skos:prefLabel "واگردان"@fa, "convertor"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/INSP0013116> .

<http://www.irandoc.acir/onto/irandoc/INSP0013116>
  skos:altLabel "واگردان بسامد-ولتاژ"@fa ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/INSP0013117> ;
  skos:prefLabel "واگردان ولتاژ-بسامد"@fa, "voltage-frequency convertor"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .