CREATE TABLE table_68916 ("Year" FLOAT, "Theme" CLOB, "Artist" CLOB, "Mintage" CLOB, "Issue price" FLOAT, "Special notes" CLOB)

What theme has a mintage of 3527?
SELECT "Theme" FROM table_68916 WHERE "Mintage" = '3527'
SELECT "Theme" FROM "table_68916" WHERE "Mintage" = '3527'