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

<http://www.irandoc.acir/onto/irandoc/NEMA0004849>
  skos:prefLabel "petroleum technology"@en, "فناوری نفت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .

<http://www.irandoc.acir/onto/irandoc/NEMA0001920>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA000435>, <http://www.irandoc.acir/onto/irandoc/NEMA0002601>, <http://www.irandoc.acir/onto/irandoc/NEMA0006823>, <http://www.irandoc.acir/onto/irandoc/NEMA0004845> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0001921>, <http://www.irandoc.acir/onto/irandoc/NEMA0004849> ;
  skos:prefLabel "خطوط لوله نفت"@fa, "petroleum pipelines"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0006823>
  skos:prefLabel "لوله‌ها"@fa, "pipes"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004845>
  skos:prefLabel "انتقال نفت"@fa, "petroleum transportation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .

<http://www.irandoc.acir/onto/irandoc/NEMA000435>
  skos:prefLabel "حمل‌ونقل لوله‌ای"@fa, "pipeline transport"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .

<http://www.irandoc.acir/onto/irandoc/NEMA0002601>
  skos:prefLabel "نفت خام"@fa, "petroleum"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .

<http://www.irandoc.acir/onto/irandoc/NEMA0001921>
  skos:prefLabel "خطوط لوله"@fa, "pipelines"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0001920> .