CREATE TABLE table_45059 ("Year" FLOAT, "Location" CLOB, "Gold" CLOB, "Silver" CLOB, "Bronze" CLOB)

Who won the Silver the Year Katie Curtis Unknown won the Bronze?
SELECT "Silver" FROM table_45059 WHERE "Bronze" = 'katie curtis unknown'
SELECT "Silver" FROM "table_45059" WHERE "Bronze" = 'katie curtis unknown'