CREATE TABLE table_63215 ("Island" CLOB, "Country" CLOB, "Population" CLOB, "Area km\\u00b2" CLOB, "Density  ( per km\\u00b2 ) " CLOB)

Which island has a density (per km ) of 1,368?
SELECT "Island" FROM table_63215 WHERE "Density (per km\u00b2)" = '1,368'
SELECT "Island" FROM "table_63215" WHERE "Density (per km\u00b2)" = '1,368'