@prefix skos: . a skos:ConceptScheme ; skos:definition "

Set dcterms:description or skos:definition to describe this vocabulary

" ; skos:inScheme , , ; skos:prefLabel "Levels of the Geography Markup Language (GML) simple features profile" . skos:prefLabel "Geography Markup Language (GML) Simple Features Compliance Level SF-0" . skos:prefLabel "Geography Markup Language (GML) Simple Features Compliance Level SF-1" . skos:prefLabel "Geography Markup Language (GML) Simple Features Compliance Level SF-2" .