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

<http://rdf-vocabulary.ddialliance.org/xkos#Is_a> rdfs:label "هست یک"@fa, "Is a"@en .
<http://www.irandoc.acir/onto/irandoc/243131007> ns0:Direct_substance <http://www.irandoc.acir/onto/irandoc/90317004> .
<http://www.irandoc.acir/onto/irandoc/90317004>
  ns0:Is_a "774106000", "765040008" ;
  skos:prefLabel "Helium"@en, "هلیوم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/20261004> ns0:Direct_substance <http://www.irandoc.acir/onto/irandoc/90317004> .