CREATE TABLE table_68946 ("Year" CLOB, "Men's singles" CLOB, "Women's singles" CLOB, "Men's doubles" CLOB, "Women's doubles" CLOB, "Mixed doubles" CLOB)

who won the men's doubles in 1933?
SELECT "Men's doubles" FROM table_68946 WHERE "Year" = '1933'
SELECT "Men's doubles" FROM "table_68946" WHERE "Year" = '1933'