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 | Watford | 2–1 | Derby County | 28 January 1989 |
| 2 | Nottingham Forest | 2–0 | Leeds United | 28 January 1989 |
| 3 | Blackburn Rovers | 2–1 | Sheffield Wednesday | 28 January 1989 |
| 4 | Aston Villa | 0–1 | Wimbledon | 28 January 1989 |
| 5 | Grimsby Town | 1–1 | Reading | 28 January 1989 |
| Replay | Reading | 1–2 | Grimsby Town | 1 February 1989 |
| 6 | Swindon Town | 0–0 | West Ham United | 28 January 1989 |
| Replay | West Ham United | 1–0 | Swindon Town | 1 February 1989 |
| 7 | Sheffield United | 3–3 | Colchester United | 28 January 1989 |
| Replay | Colchester United | 0–2 | Sheffield United | 31 January 1989 |
| 8 | Brentford | 3–1 | Manchester City | 28 January 1989 |
| 9 | Manchester United | 4–0 | Oxford United | 28 January 1989 |
| 10 | Norwich City | 8–0 | Sutton United | 28 January 1989 |
| 11 | Plymouth Argyle | 1–1 | Everton | 28 January 1989 |
| Replay | Everton | 4–0 | Plymouth Argyle | 31 January 1989 |
| 12 | Bradford City | 1–2 | Hull City | 28 January 1989 |
| 13 | Millwall | 0–2 | Liverpool | 29 January 1989 |
| 14 | Charlton Athletic | 2–1 | Kettering Town | 28 January 1989 |
| 15 | Stoke City | 3–3 | Barnsley | 28 January 1989 |
| Replay | Barnsley | 2–1 | Stoke City | 31 January 1989 |
| 16 | Hartlepool United | 1–1 | Bournemouth | 28 January 1989 |
| Replay | Bournemouth | 5–2 | Hartlepool United | 31 January 1989 |
Question:
What was the tie number for the game with an away team of Hartlepool United?
Answer:
Replay