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

<http://www.irandoc.acir/onto/irandoc/NEMA0008509>
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0008520> ;
  skos:prefLabel "فوماریک اسید"@fa, "fumaric acid"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0008520>
  skos:prefLabel "carboxylic acids"@en, "کربوکسیلیک اسیدها"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0008509> .