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

<http://www.irandoc.acir/onto/irandoc/CAB0006053>
  skos:prefLabel "لجن فاضلاب"@fa, "sewage sludge"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CAB0006052> .

<http://www.irandoc.acir/onto/irandoc/CAB0006052>
  skos:altLabel "لجن ، فعال‌شده"@fa ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/CAB0006053> ;
  skos:prefLabel "لجن فعال‌شده"@fa, "activated sludge"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .