Question: What is Tie No., when Away Team is "Manchester United"?
SQL: SELECT "Tie no" FROM "2-17438349-4" WHERE "Away team" = 'Manchester United';

Question: What is Away Team, when Home Team is "Ipswich Town", and when Date is "6 February 1986"?
SQL: SELECT "Away team" FROM "2-17438349-4" WHERE "Home team" = 'Ipswich Town' AND "Date" = '6 February 1986';

Question: What is Date, when Home Team is "Luton Town"?
SQL: SELECT "Date" FROM "2-17438349-4" WHERE "Home team" = 'Luton Town';

Question: What is Away Team, when Date is "25 January 1986", and when Tie No is "6"?
SQL: SELECT "Away team" FROM "2-17438349-4" WHERE "Date" = '25 January 1986' AND "Tie no" = '6';