Table:
0
A
B
C
D
E
1
Tie no
Home team
Score
Away team
Date
2
1
Preston North End
2–1
Brighton & Hove Albion
20 February 1960
3
2
Leicester City
2–1
West Bromwich Albion
20 February 1960
4
3
Luton Town
1–4
Wolverhampton Wanderers
20 February 1960
5
4
Sheffield United
3–2
Watford
20 February 1960
6
5
Tottenham Hotspur
1–3
Blackburn Rovers
20 February 1960
7
6
Manchester United
0–1
Sheffield Wednesday
20 February 1960
8
7
Bradford City
2–2
Burnley
20 February 1960
9
Replay
Burnley
5–0
Bradford City
23 February 1960
10
8
Port Vale
1–2
Aston Villa
20 February 1960

Questions and formulas:
Question: What was the away team that played luton town?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="luton town"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E10,B2:B10="luton town"),4))
Level: medium