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 | Bristol City | 4–4 | Wrexham | 7 January 1978 |
| Replay | Wrexham | 3–0 | Bristol City | 9 January 1978 |
| 2 | Burnley | 1–0 | Fulham | 7 January 1978 |
| 3 | Walsall | 4–1 | Swansea City | 7 January 1978 |
| 4 | Nottingham Forest | 4–1 | Swindon Town | 7 January 1978 |
| 5 | Blackburn Rovers | 2–1 | Shrewsbury Town | 7 January 1978 |
| 6 | Grimsby Town | 0–0 | Southampton | 7 January 1978 |
| Replay | Southampton | 0–0 | Grimsby Town | 10 January 1978 |
| Replay | Grimsby Town | 1–4 | Southampton | 16 January 1978 |
| 7 | Middlesbrough | 3–0 | Coventry City | 7 January 1978 |
| 8 | West Bromwich Albion | 4–1 | Blackpool | 7 January 1978 |
| 9 | Sunderland | 0–1 | Bristol Rovers | 7 January 1978 |
| 10 | Derby County | 3–2 | Southend United | 7 January 1978 |
| 11 | Luton Town | 1–1 | Oldham Athletic | 7 January 1978 |
| Replay | Oldham Athletic | 1–2 | Luton Town | 10 January 1978 |
| 12 | Everton | 4–1 | Aston Villa | 7 January 1978 |
| 13 | Sheffield United | 0–5 | Arsenal | 7 January 1978 |
| 14 | Tottenham Hotspur | 2–2 | Bolton Wanderers | 7 January 1978 |
| Replay | Bolton Wanderers | 2–1 | Tottenham Hotspur | 10 January 1978 |
| 15 | Queens Park Rangers | 4–0 | Wealdstone | 7 January 1978 |
| 16 | West Ham United | 1–0 | Watford | 7 January 1978 |
| 17 | Brighton & Hove Albion | 3–0 | Scarborough | 7 January 1978 |
| 18 | Hull City | 0–1 | Leicester City | 7 January 1978 |
| 19 | Carlisle United | 1–1 | Manchester United | 7 January 1978 |
| Replay | Manchester United | 4–2 | Carlisle United | 11 January 1978 |
| 20 | Chelsea | 4–2 | Liverpool | 7 January 1978 |
| 21 | Exeter City | 2–2 | Wolverhampton Wanderers | 7 January 1978 |
| Replay | Wolverhampton Wanderers | 3–1 | Exeter City | 10 January 1978 |
| 22 | Blyth Spartans | 1–0 | Enfield | 7 January 1978 |
| 23 | Mansfield Town | 1–0 | Plymouth Argyle | 7 January 1978 |
| 24 | Cardiff City | 0–2 | Ipswich Town | 7 January 1978 |
| 25 | Charlton Athletic | 0–2 | Notts County | 6 January 1978 |
| 26 | Leeds United | 1–2 | Manchester City | 7 January 1978 |
| 27 | Stoke City | 4–0 | Tilbury | 7 January 1978 |
| 28 | Rotherham United | 1–1 | Millwall | 7 January 1978 |
| Replay | Millwall | 2–0 | Rotherham United | 10 January 1978 |
| 29 | Peterborough United | 1–1 | Newcastle United | 7 January 1978 |
| Replay | Newcastle United | 2–0 | Peterborough United | 11 January 1978 |
| 30 | Birmingham City | 4–0 | Wigan Athletic | 7 January 1978 |
| 31 | Orient | 1–1 | Norwich City | 6 January 1978 |
| Replay | Norwich City | 0–1 | Orient | 16 January 1978 |
| 32 | Hartlepool United | 2–1 | Crystal Palace | 7 January 1978 |
Question:
who is the away team when the home team is hartlepool united?
Answer:
Crystal Palace