Table:
text: 1950–51 FA Cup
Fourth Round Proper
Fourth Round Proper
Tie_no Home_team Score Away_team Date_
1 Blackpool 2–1 Stockport County 27 January 1951
2 Bristol City 1–0 Brighton & Hove Albion 27 January 1951
3 Preston North End 0–2 Huddersfield Town 27 January 1951
4 Wolverhampton Wanderers 3–1 Aston Villa 27 January 1951
5 Sunderland 2–0 Southampton 27 January 1951
6 Derby County 1–3 Birmingham City 27 January 1951
7 Luton Town 1–2 Bristol Rovers 27 January 1951
8 Sheffield United 0–0 Mansfield Town 27 January 1951
Replay Mansfield Town 4–2 Sheffield United 31 January 1951
9 Newcastle United 3–2 Bolton Wanderers 27 January 1951
10 Manchester United 4–0 Leeds United 27 January 1951

text: 1950–51 FA Cup
Fourth Round Proper
Fourth Round Proper
Tie_no Home_team Score Away_team Date_
11 Millwall 0–1 Fulham 27 January 1951
12 Hull City 2–0 Rotherham United 27 January 1951
13 Exeter City 1–1 Chelsea 27 January 1951
Replay Chelsea 2–0 Exeter City 31 January 1951
14 Newport County 0–2 Norwich City 27 January 1951
15 Arsenal 3–2 Northampton Town 27 January 1951
16 Stoke City 1–0 West Ham United 27 January 1951

Question: Who was the home team on 31 January 1951 when the away team was Sheffield United for the 1950–51 FA Cup fourth round?