@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://culturaitalia.it/pico/thesaurus/4.3#quando>
  skos:prefLabel "when"@en, "quando"@it ;
  a skos:Concept ;
  skos:narrower <http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica> .

<http://culturaitalia.it/pico/thesaurus/4.3#archeano>
  skos:prefLabel "Archean"@en, "Archeano"@it ;
  a skos:Concept ;
  skos:broader <http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica> .

<http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica>
  skos:broader <http://culturaitalia.it/pico/thesaurus/4.3#quando> ;
  skos:narrower <http://culturaitalia.it/pico/thesaurus/4.3#fanerozoico>, <http://culturaitalia.it/pico/thesaurus/4.3#proterozoico>, <http://culturaitalia.it/pico/thesaurus/4.3#archeano>, <http://culturaitalia.it/pico/thesaurus/4.3#adeano> ;
  skos:inScheme <http://culturaitalia.it/pico/thesaurus/4.3> ;
  skos:prefLabel "Geological time scale"@en, "Scala temporale geologica"@it ;
  a skos:Concept .

<http://culturaitalia.it/pico/thesaurus/4.3> a skos:ConceptScheme .
<http://culturaitalia.it/pico/thesaurus/4.3#proterozoico>
  skos:prefLabel "Proterozoic"@en, "Proterozoico"@it ;
  a skos:Concept ;
  skos:broader <http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica> .

<http://culturaitalia.it/pico/thesaurus/4.3#fanerozoico>
  skos:prefLabel "Phanerozoic"@en, "Fanerozoico"@it ;
  a skos:Concept ;
  skos:broader <http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica> .

<http://culturaitalia.it/pico/thesaurus/4.3#adeano>
  skos:prefLabel "Hadean"@en, "Adeano"@it ;
  a skos:Concept ;
  skos:broader <http://culturaitalia.it/pico/thesaurus/4.3#scala_temporale_geologica> .