@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://rdf-vocabulary.ddialliance.org/xkos#> .

<http://www.irandoc.acir/onto/irandoc/AGR0001249>
  skos:prefLabel "Petrol engines"@en, "موتورهای بنزینی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/AGR0001250> .

<http://www.irandoc.acir/onto/irandoc/AGR0001251>
  skos:prefLabel "Engines"@en, "موتورها (با منبع انرژی درونی)"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:has_narrower <http://www.irandoc.acir/onto/irandoc/AGR0001250> ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/AGR0001250> .

<http://www.irandoc.acir/onto/irandoc/AGR0001248>
  skos:prefLabel "Diesel engines"@en, "موتور دیزل"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:has_broader <http://www.irandoc.acir/onto/irandoc/AGR0001250> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/AGR0001250> .

<http://www.irandoc.acir/onto/irandoc/AGR0001250>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/AGR0001249>, <http://www.irandoc.acir/onto/irandoc/AGR0001248> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/AGR0001251> ;
  skos:prefLabel "Internal combustion engines"@en, "موتورهای درون‌سوز"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .