What Date Released, when # Of Discs is greater than 4?
CREATE TABLE "dvd_releases" (
  "season" text,
  "date_released" text,
  "num_of_episodes" real,
  "num_of_discs" real,
  "special_features" text
);
SELECT "date_released" FROM "dvd_releases" WHERE "num_of_discs">4;