@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/mathpro113>
  skos:prefLabel "هندسه ریمانی"@fa, "riemannian geometry"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/mathpro335>
  skos:prefLabel "نظریه نسبیت"@fa, "theory of relativity"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://rdf-vocabulary.ddialliance.org/xkos#comment> rdfs:label "توضیحات"@fa, "comment"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro3018>
  ns0:comment <http://en.wikipedia.org/wiki/orthonormal_frame> ;
  ns0:is_defined_by <http://www.irandoc.acir/onto/irandoc/mathpro113>, <http://www.irandoc.acir/onto/irandoc/mathpro335> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro2962> ;
  skos:prefLabel "قاب متعامد"@fa, "orthonormal frame"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

ns0:is_defined_by rdfs:label "تعریف شده توسط"@fa, "is defined by"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro2962>
  skos:prefLabel "قاب"@fa, "frame"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro3018> .