Table:
0
A
B
C
D
E
F
G
1
Home team
Home team score
Away team
Away team score
Venue
Crowd
Date
2
Melbourne
25.16 (166)
North Melbourne
5.14 (44)
MCG
12,906
5 June 1937
3
Hawthorn
9.6 (60)
Richmond
8.10 (58)
Glenferrie Oval
10,000
5 June 1937
4
Essendon
16.12 (108)
South Melbourne
11.10 (76)
Windy Hill
12,000
5 June 1937
5
Carlton
19.12 (126)
Footscray
9.10 (64)
Princes Park
12,500
5 June 1937
6
Geelong
16.19 (115)
Fitzroy
10.10 (70)
Corio Oval
8,000
5 June 1937
7
St Kilda
12.15 (87)
Collingwood
9.15 (69)
Junction Oval
28,000
5 June 1937

Questions and formulas:
Question: Which Home team has an Away team of collingwood?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="collingwood"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,C2:C7="collingwood"),1))
Level: medium