@prefix sampledescriptionvocabulary1: <https://purls.helmholtz-metadaten.de/skosmos/sdv/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://server/unset-base/> .

sampledescriptionvocabulary1:Polar
  skos:prefLabel "Polar Coordinate System" ;
  skos:definition " In mathematics, the polar coordinate system specifies a given point in a plane by using a distance and an angle as its two coordinates. (Wikipedia)"^^ns0:None ;
  skos:broader sampledescriptionvocabulary1:CoordinateSystem ;
  a skos:Concept .

sampledescriptionvocabulary1:CoordinateSystem
  skos:prefLabel "Coordinate system" ;
  a skos:Concept ;
  skos:narrower sampledescriptionvocabulary1:Polar .