CREATE TABLE "third_round_proper" (
  "tie_no" text,
  "home_team" text,
  "score" text,
  "away_team" text,
  "date" text
);

Question: Who was the away team against the home team Sheffield United?
SQL: SELECT "away_team" FROM "third_round_proper" WHERE "home_team"='sheffield united';

Question: Who was the away team with a tie of 14?
SQL: SELECT "away_team" FROM "third_round_proper" WHERE "tie_no"='14';