What identities have more than 5 DVD volumes?
CREATE TABLE "season_2_1989" (
  "episode_title" text,
  "villain_s" text,
  "identity_ies" text,
  "reason_s" text,
  "original_airdate" text,
  "dvd_volume" real
);
SELECT "identity_ies" FROM "season_2_1989" WHERE "dvd_volume">5;