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

<http://www.irandoc.acir/onto/irandoc/CAB0058431>
  skos:related <http://www.irandoc.acir/onto/irandoc/CAB0006064>, <http://www.irandoc.acir/onto/irandoc/CAB0004808> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/CAB0058432> ;
  skos:prefLabel "شیل نفتی"@fa, "oil shale"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/CAB0004808>
  skos:prefLabel "روغن معدنی"@fa, "mineral oils"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CAB0058431> .

<http://www.irandoc.acir/onto/irandoc/CAB0058432>
  skos:prefLabel "شیل"@fa, "shale"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CAB0058431> .

<http://www.irandoc.acir/onto/irandoc/CAB0006064>
  skos:prefLabel "ضایعات سنگ‌های نفتی"@fa, "oil shale wastes"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CAB0058431> .