Which Away Team has a Tie no of replay and a Home Team of Chesterfield?
CREATE TABLE "second_round_proper" (
  "tie_no" text,
  "home_team" text,
  "score" text,
  "away_team" text,
  "attendance" text
);
SELECT "away_team" FROM "second_round_proper" WHERE "tie_no"='replay' AND "home_team"='chesterfield';