@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<http://vocabularies.unesco.org/thesaurus>
  a skos:ConceptScheme ;
  skos:prefLabel "UNESCO Thesaurus"@en, "Thésaurus de l'UNESCO"@fr, "Тезаурус ЮНЕСКО"@ru, "مكنز اليونسكو"@ar, "Tesauro de la UNESCO"@es ;
  skos:hasTopConcept <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/concept3237>
  a skos:Concept ;
  skos:prefLabel "اجهزة بصرية"@ar, "Optical instruments"@en, "Instrument optique"@fr, "Instrumento óptico"@es, "Оптические инструменты"@ru ;
  skos:related <http://vocabularies.unesco.org/thesaurus/concept129> .

skos:Concept a owl:Class .
<http://vocabularies.unesco.org/thesaurus/concept5844>
  a skos:Concept ;
  skos:prefLabel "Optical fibres"@en, "Fibra óptica"@es, "Оптические волокна"@ru, "Fibre optique"@fr, "الياف ضوئية"@ar ;
  skos:related <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/concept129>
  dc:modified "2019-12-15T13:35:39Z"^^xsd:dateTime ;
  a skos:Concept ;
  skos:inScheme <http://vocabularies.unesco.org/thesaurus> ;
  skos:prefLabel "Optique"@fr, "بصريات"@ar, "Óptica"@es, "Optics"@en, "Оптика"@ru ;
  skos:narrower <http://vocabularies.unesco.org/thesaurus/concept9537>, <http://vocabularies.unesco.org/thesaurus/concept11102> ;
  skos:hiddenLabel "Optica"@es ;
  skos:topConceptOf <http://vocabularies.unesco.org/thesaurus> ;
  skos:related <http://vocabularies.unesco.org/thesaurus/concept3237>, <http://vocabularies.unesco.org/thesaurus/concept5844>, <http://vocabularies.unesco.org/thesaurus/concept11170>, <http://vocabularies.unesco.org/thesaurus/concept5746> .

<http://vocabularies.unesco.org/thesaurus/concept11170>
  a skos:Concept ;
  skos:prefLabel "Fotoquímica"@es, "كيمياء ضوئية"@ar, "Фотохимия"@ru, "Photochemistry"@en, "Photochimie"@fr ;
  skos:related <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/concept9537>
  a skos:Concept ;
  skos:prefLabel "Light"@en, "ضوء"@ar, "Luz"@es, "Свет"@ru, "Lumière"@fr ;
  skos:broader <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/mt2.20>
  a isothes:ConceptGroup, <http://vocabularies.unesco.org/ontology#MicroThesaurus>, skos:Collection ;
  skos:prefLabel "علوم طبيعية"@ar, "Physical sciences"@en, "Sciences de la physique"@fr, "Физические науки"@ru, "Ciencias físicas"@es ;
  skos:member <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/concept11102>
  a skos:Concept ;
  skos:prefLabel "Формирование изображения"@ru, "Formation des images"@fr, "تكوين الصورة"@ar, "Formación de las imágenes"@es, "Image formation"@en ;
  skos:broader <http://vocabularies.unesco.org/thesaurus/concept129> .

<http://vocabularies.unesco.org/thesaurus/domain2>
  a isothes:ConceptGroup, <http://vocabularies.unesco.org/ontology#Domain>, skos:Collection ;
  skos:prefLabel "علم"@ar, "Естественные науки"@ru, "Science"@en, "Science"@fr, "Ciencia"@es ;
  skos:member <http://vocabularies.unesco.org/thesaurus/mt2.20> .

<http://vocabularies.unesco.org/thesaurus/concept5746>
  a skos:Concept ;
  skos:prefLabel "Laser"@fr, "Лазеры"@ru, "Rayo láser"@es, "ليزر"@ar, "Lasers"@en ;
  skos:related <http://vocabularies.unesco.org/thesaurus/concept129> .