@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/mathpro3228>
  skos:prefLabel "هندسه دیفرانسیل"@fa, "differential geometry"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro335> .

<http://www.irandoc.acir/onto/irandoc/mathpro335>
  ns0:comment <http://en.wikipedia.org/wiki/relativity_theory> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro3228> ;
  skos:prefLabel "نظریه نسبیت"@fa, "theory of relativity"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

ns0:comment rdfs:label "توضیحات"@fa, "comment"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro3018> ns0:is_defined_by <http://www.irandoc.acir/onto/irandoc/mathpro335> .
<http://www.irandoc.acir/onto/irandoc/mathpro30> ns0:is_defined_by <http://www.irandoc.acir/onto/irandoc/mathpro335> .