@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/OPB_01598>
  skos:broader <http://www.irandoc.acir/onto/irandoc/OPB_00147> ;
  skos:prefLabel "Mathematical constant"@en, "ثابت ریاضی"@fa ;
  ns0:Obsolete "false" ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/OPB_01587>, <http://www.irandoc.acir/onto/irandoc/OPB_01378>, <http://www.irandoc.acir/onto/irandoc/OPB_01588> ;
  ns0:prefixIRI "OPB:OPB_01598" ;
  ns0:label "Mathematical constant" ;
  ns0:comment "Physics property that is a real or imaginary scalar quantity" ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/OPB_01587>
  skos:prefLabel "پی."@fa, "Pi"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/OPB_01598> .

ns0:comment rdfs:label "نظر"@fa, "comment"@en .
ns0:label rdfs:label "برچسب"@fa, "label"@en .
<http://www.irandoc.acir/onto/irandoc/OPB_01588>
  skos:prefLabel "ای."@fa, "E"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/OPB_01598> .

ns0:prefixIRI rdfs:label "پیشوند آی‌آرآی"@fa, "prefixIRI"@en .
ns0:Obsolete rdfs:label "منسوخ"@fa, "Obsolete"@en .
<http://www.irandoc.acir/onto/irandoc/OPB_01378>
  skos:prefLabel "آی."@fa, "I"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/OPB_01598> .

<http://www.irandoc.acir/onto/irandoc/OPB_00147>
  skos:prefLabel "ویژگی فیزیکی"@fa, "Physics property"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/OPB_01598> .