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

<http://www.irandoc.acir/onto/irandoc/mathpro219>
  ns0:comment <http://en.wikipedia.org/wiki/center_of_mass> ;
  ns0:is_defined_by <http://www.irandoc.acir/onto/irandoc/mathpro446> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro3281> ;
  skos:prefLabel "مرکز جرم"@fa, "center of mass"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

ns0:comment rdfs:label "توضیحات"@fa, "comment"@en .
ns0:is_defined_by rdfs:label "تعریف شده توسط"@fa, "is defined by"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro3281>
  skos:prefLabel "تنظیم"@fa, "set"@en, "مجموعه"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro219> .

<http://www.irandoc.acir/onto/irandoc/mathpro446>
  skos:prefLabel "هندسه متری"@fa, "هندسه متریک"@fa, "metric geometry"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .