who won the men's doubles in 1933?
CREATE TABLE "past_winners" (
  "year" text,
  "men_s_singles" text,
  "women_s_singles" text,
  "men_s_doubles" text,
  "women_s_doubles" text,
  "mixed_doubles" text
);
SELECT "men_s_doubles" FROM "past_winners" WHERE "year"='1933';