CREATE TABLE "big_brother_2000_2011" (
  "series" text,
  "theme" text,
  "start" text,
  "finale" text,
  "days" real,
  "housemates" real,
  "winner" text,
  "prize_money" text,
  "presenter" text,
  "co_presenter" text
);

Question: What's the theme for a series of season 3 with smaller than 148 days?
SQL: SELECT "theme" FROM "big_brother_2000_2011" WHERE "days"<148 AND "series"='season 3';