Who was the opponent on 12 May, when the match day was more than 33?
CREATE TABLE "scottish_premier_league" (
  "match_day" real,
  "date" text,
  "opponent" text,
  "venue" text,
  "score" text,
  "attendance" real,
  "report" text
);
SELECT "opponent" FROM "scottish_premier_league" WHERE "match_day">33 AND "date"='12 may';