CREATE TABLE table_17594 ("Year" FLOAT, "Denomination" CLOB, "Alloy" CLOB, "Reverse" CLOB, "Diameter" CLOB, "Weight" CLOB, "Obverse" CLOB, "Mintage" FLOAT, "Series" CLOB)

what's the series with reverse being swimming
SELECT "Series" FROM table_17594 WHERE "Reverse" = 'Swimming'
SELECT "Series" FROM "table_17594" WHERE "Reverse" = 'Swimming'