@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://rdf-vocabulary.ddialliance.org/xkos#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

<http://www.irandoc.acir/onto/irandoc/44446004>
  skos:prefLabel "Petroleum product"@en, "فرآورده نفتی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/31086004> .

<http://www.irandoc.acir/onto/irandoc/53171009>
  skos:prefLabel "بنزین بدون سرب"@fa, "Lead-free gasoline"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:Is_a <http://www.irandoc.acir/onto/irandoc/31086004> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/31086004> .

<http://www.irandoc.acir/onto/irandoc/25843000>
  skos:prefLabel "بنزین سرب اتیل"@fa, "Lead ethyl gasoline"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:Is_a <http://www.irandoc.acir/onto/irandoc/31086004> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/31086004> .

ns0:Is_a rdfs:label "هست یک"@fa, "Is a"@en .
<http://www.irandoc.acir/onto/irandoc/31086004>
  ns0:Is_a <http://www.irandoc.acir/onto/irandoc/44446004> ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/53171009>, <http://www.irandoc.acir/onto/irandoc/25843000> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/44446004> ;
  skos:prefLabel "Gasoline"@en, "بنزین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .