CREATE TABLE "quarterfinals" (
  "tie_no" text,
  "home_team" text,
  "score" text,
  "away_team" text,
  "attendance" text
);

Question: What was the attendance at the Billericay Town home game?
SQL: SELECT "attendance" FROM "quarterfinals" WHERE "home_team"='billericay town';

Question: What was the tie number of the away game for Ashford Town (Middx)?
SQL: SELECT "tie_no" FROM "quarterfinals" WHERE "away_team"='ashford town (middx)';

Question: What was the attendance at the Billericay Town home game?
SQL: SELECT "attendance" FROM "quarterfinals" WHERE "home_team"='billericay town';

Question: Who was the away team at the game attended by 81?
SQL: SELECT "away_team" FROM "quarterfinals" WHERE "attendance"='81';