CREATE TABLE table_63216 ("Island" TEXT, "Country" TEXT, "Population" TEXT, "Area km\\u00b2" TEXT, "Density  ( per km\\u00b2 ) " TEXT)

Which country has a density (per km ) of 6,814?
SELECT "Country" FROM table_63216 WHERE "Density (per km\u00b2)" = '6,814'
SELECT "Country" FROM "table_63216" WHERE "Density (per km\u00b2)" = '6,814'