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 | Bournemouth | 1–1 | Manchester United | 18 February 1989 |
| Replay | Manchester United | 1–0 | Bournemouth | 22 February 1989 |
| 2 | Watford | 0–3 | Nottingham Forest | 19 February 1989 |
| 3 | Blackburn Rovers | 0–2 | Brentford | 18 February 1989 |
| 4 | Barnsley | 0–1 | Everton | 18 February 1989 |
| 5 | Norwich City | 3–2 | Sheffield United | 18 February 1989 |
| 6 | Hull City | 2–3 | Liverpool | 18 February 1989 |
| 7 | Wimbledon | 3–1 | Grimsby Town | 18 February 1989 |
| 8 | Charlton Athletic | 0–1 | West Ham United | 18 February 1989 |
Question:
Who was the away team when the home team was Norwich City?
Answer:
Sheffield United