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

<http://www.irandoc.acir/onto/irandoc/chmtr000133>
  skos:scopeNote "آب در طبیعت طی 3 مرحله تصفیه می‌شود"@fa ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000151> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/chmtr000135> ;
  skos:prefLabel "تصفیه‌ طبیعی آب"@fa, "natural treatment of water"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/chmtr000151>
  skos:prefLabel "چرخه آب"@fa, "water cycle"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000133> .

<http://www.irandoc.acir/onto/irandoc/chmtr000135>
  skos:prefLabel "تصفیه آب"@fa, "water treatment"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/chmtr000133> .