Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Tie no | Home team | Score | Away team | Date |
| --- | --- | --- | --- | --- |
| 1 | Blackpool | 2–1 | Manchester City | 7 January 1984 |
| 2 | Darlington | 4–1 | Maidstone United | 7 January 1984 |
| 3 | Bournemouth | 2–0 | Manchester United | 7 January 1984 |
| 4 | Burnley | 0–0 | Oxford United | 7 January 1984 |
| Replay | Oxford United | 2–1 | Burnley | 11 January 1984 |
| 5 | Liverpool | 4–0 | Newcastle United | 6 January 1984 |
| 6 | Rochdale | 1–4 | Telford United | 7 January 1984 |
| 7 | Gillingham | 5–3 | Brentford | 7 January 1984 |
| 8 | Notts County | 2–2 | Bristol City | 8 January 1984 |
| Replay | Bristol City | 0–2 | Notts County | 10 January 1984 |
| 9 | Nottingham Forest | 1–2 | Southampton | 7 January 1984 |
| 10 | Blackburn Rovers | 1–0 | Chelsea | 7 January 1984 |
| 11 | Aston Villa | 1–1 | Norwich City | 7 January 1984 |
| Replay | Norwich City | 3–0 | Aston Villa | 11 January 1984 |
| 12 | Sheffield Wednesday | 1–0 | Barnsley | 7 January 1984 |
| 13 | Bolton Wanderers | 0–3 | Sunderland | 7 January 1984 |
| 14 | Middlesbrough | 3–2 | Arsenal | 7 January 1984 |
| 15 | Luton Town | 2–2 | Watford | 7 January 1984 |
| Replay | Watford | 4–3 | Luton Town | 10 January 1984 |
| 16 | Shrewsbury Town | 3–0 | Oldham Athletic | 7 January 1984 |
| 17 | Sheffield United | 1–1 | Birmingham City | 7 January 1984 |
| Replay | Birmingham City | 2–0 | Sheffield United | 10 January 1984 |
| 18 | Fulham | 0–0 | Tottenham Hotspur | 7 January 1984 |
| Replay | Tottenham Hotspur | 2–0 | Fulham | 11 January 1984 |
| 19 | Coventry City | 1–1 | Wolverhampton Wanderers | 7 January 1984 |
| Replay | Wolverhampton Wanderers | 1–1 | Coventry City | 10 January 1984 |
| Replay | Coventry City | 3–0 | Wolverhampton Wanderers | 16 January 1984 |
| 20 | Portsmouth | 2–1 | Grimsby Town | 7 January 1984 |
| 21 | West Ham United | 1–0 | Wigan Athletic | 7 January 1984 |
| 22 | Brighton & Hove Albion | 2–0 | Swansea City | 7 January 1984 |
| 23 | Plymouth Argyle | 2–2 | Newport County | 7 January 1984 |
| Replay | Newport County | 0–1 | Plymouth Argyle | 10 January 1984 |
| 24 | Carlisle United | 1–1 | Swindon Town | 7 January 1984 |
| Replay | Swindon Town | 3–1 | Carlisle United | 10 January 1984 |
| 25 | Crystal Palace | 1–0 | Leicester City | 7 January 1984 |
| 26 | Huddersfield Town | 2–1 | Queens Park Rangers | 7 January 1984 |
| 27 | Cardiff City | 0–3 | Ipswich Town | 7 January 1984 |
| 28 | Leeds United | 1–1 | Scunthorpe United | 7 January 1984 |
| Replay | Scunthorpe United | 1–1 | Leeds United | 10 January 1984 |
| Replay | Scunthorpe United | 4–2 | Leeds United | 16 January 1984 |
| 29 | Stoke City | 0–2 | Everton | 7 January 1984 |
| 30 | Rotherham United | 0–0 | West Bromwich Albion | 7 January 1984 |
| Replay | West Bromwich Albion | 3–0 | Rotherham United | 11 January 1984 |
| 31 | Colchester United | 0–1 | Charlton Athletic | 7 January 1984 |
| 32 | Cambridge United | 0–3 | Derby County | 7 January 1984 |
Question:
Who was the away team against the home team Sheffield United?
Answer:
Birmingham City