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

<http://www.irandoc.acir/onto/irandoc/AGR0005180>
  skos:prefLabel "Heavy metals"@en, "فلزات سنگین"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:has_related <http://www.irandoc.acir/onto/irandoc/AGR0005163> ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/AGR0005163> .

<http://www.irandoc.acir/onto/irandoc/AGR0005194> ns0:has_narrower <http://www.irandoc.acir/onto/irandoc/AGR0005163> .
<http://www.irandoc.acir/onto/irandoc/AGR0005163>
  skos:altLabel "Bi (symbol)"@en, "Bi (نشانه)"@fa ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/AGR0005180> ;
  skos:prefLabel "Bismuth"@en, "بیسموت"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .