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

<http://www.irandoc.acir/onto/irandoc/EIT0013338>
  skos:related <http://www.irandoc.acir/onto/irandoc/EIT0003441> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/EIT0013340> ;
  skos:prefLabel "horizontal well"@en, "چاه افقی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/EIT0013340>
  skos:prefLabel "oil well"@en, "چاه نفت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/EIT0013338> .

<http://www.irandoc.acir/onto/irandoc/EIT0003441>
  skos:prefLabel "حفاری چاه نفت"@fa, "oil well drilling"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/EIT0013338> .