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

<http://www.irandoc.acir/onto/irandoc/insp0008179>
  skos:prefLabel "Sludge treatment"@en, "تصفیه لجن"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0008178> .

<http://www.irandoc.acir/onto/irandoc/insp0003405>
  skos:prefLabel "Public utilities"@en, "تسهیلات عمومی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0008178> .

<http://www.irandoc.acir/onto/irandoc/insp000287>
  skos:prefLabel "Wastewater treatment"@en, "تصفیه پساب"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0008178> .

<http://www.irandoc.acir/onto/irandoc/insp0010921>
  skos:prefLabel "Sanitary engineering"@en, "مهندسی بهداشت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0008178> .

<http://www.irandoc.acir/onto/irandoc/insp0008178>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0003405>, <http://www.irandoc.acir/onto/irandoc/insp0008179>, <http://www.irandoc.acir/onto/irandoc/insp000287>, <http://www.irandoc.acir/onto/irandoc/insp0010921> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0008182> ;
  skos:prefLabel "Sewage treatment"@en, "تصفیه فاضلاب"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp0008182>
  skos:prefLabel "Waste handling"@en, "پسماندورزی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0008178> .