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

<http://www.irandoc.acir/onto/irandoc/57795002>
  skos:prefLabel "Chemical element"@en, "عنصر شیمیایی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/17678002> .

<http://rdf-vocabulary.ddialliance.org/xkos#Is_a> rdfs:label "هست یک"@fa, "Is a"@en .
<http://www.irandoc.acir/onto/irandoc/22907001>
  skos:prefLabel "Heavy metal"@en, "فلز سنگین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/17678002> .

<http://www.irandoc.acir/onto/irandoc/767483006>
  skos:prefLabel "ترکیب زیرکونیوم و زیرکونیوم"@fa, "Zirconium and zirconium compound"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/17678002> .

<http://www.irandoc.acir/onto/irandoc/17678002>
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:Is_a <http://www.irandoc.acir/onto/irandoc/767483006>, <http://www.irandoc.acir/onto/irandoc/22907001>, <http://www.irandoc.acir/onto/irandoc/57795002> ;
  skos:prefLabel "Zirconium"@en, "زیرکونیوم"@fa ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/767483006>, <http://www.irandoc.acir/onto/irandoc/22907001>, <http://www.irandoc.acir/onto/irandoc/57795002> .