CREATE TABLE "season_2_1989" (
  "episode_title" text,
  "villain_s" text,
  "identity_ies" text,
  "reason_s" text,
  "original_airdate" text,
  "dvd_volume" real
);

Question: What identities have more than 5 DVD volumes?
SQL: SELECT "identity_ies" FROM "season_2_1989" WHERE "dvd_volume">5;

Question: How many DVD volumes was identified by Skippy Johnson?
SQL: SELECT "dvd_volume" FROM "season_2_1989" WHERE "identity_ies"='skippy johnson';