CREATE TABLE "record_by_conference" (
  "conference" text,
  "num_of_bids" real,
  "record" text,
  "win_pct" text,
  "round_of_32" text,
  "elite_eight" text,
  "final_four" text,
  "championship_game" text
);

Question: Tell me the championship game for big eight
SQL: SELECT "championship_game" FROM "record_by_conference" WHERE "conference"='big eight';