@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#label> rdfs:label "برچسب"@fa, "label"@en .
<http://rdf-vocabulary.ddialliance.org/xkos#comment> rdfs:label "توضیحات"@fa, "comment"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro133>
  ns0:comment <http://en.wikipedia.org/wiki/gaussian_curvature#surfaces_of_constant_curvature> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro132> ;
  skos:prefLabel "سطح انحنای ثابت"@fa, "surface of constant curvature"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  ns0:label <http://www.irandoc.acir/onto/irandoc/mathpro133> .

<http://www.irandoc.acir/onto/irandoc/mathpro132>
  skos:prefLabel "فضای انحنای ثابت"@fa, "space of constant curvature"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro133> .