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

<http://www.irandoc.acir/onto/irandoc/chmtr000038>
  skos:prefLabel "آلودگی هوا"@fa, "air pollution"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000062>
  skos:prefLabel "بهبود كیفیت سوخت"@fa, "fuel quality improvement"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000056>
  skos:prefLabel "gasoline"@en, "بنزین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000093>
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:prefLabel "lead tetraethyl"@en, "تترااتیل سرب"@fa ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000388>, <http://www.irandoc.acir/onto/irandoc/chmtr000298>, <http://www.irandoc.acir/onto/irandoc/chmtr000038>, <http://www.irandoc.acir/onto/irandoc/chmtr000173>, <http://www.irandoc.acir/onto/irandoc/chmtr000062>, <http://www.irandoc.acir/onto/irandoc/chmtr000056> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/chmtr000131> .

<http://www.irandoc.acir/onto/irandoc/chmtr000298>
  skos:prefLabel "عدد اوكتان"@fa, "octane number"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000388>
  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/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000131>
  skos:prefLabel "chemical compound"@en, "ترکیبات شیمیایی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/chmtr000093> .

<http://www.irandoc.acir/onto/irandoc/chmtr000173>
  skos:prefLabel "خوش‌سوزی"@fa, "good combustion"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/chmtr000093> .