@prefix skos: . a skos:Collection ; skos:definition "The Well-Known Scale Sets(WKSS) concept was introduced in the Web Map Tile Service (WMTS) standard (OGC 07-057r7) to improve interoperability and further described in the 2D Tile Matrix Set standard (OGC 17-083r2)."@en ; skos:inScheme ; skos:prefLabel "OGC Well-Known Scale Sets (WKSS)"@en .