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
12.22 (94)
South Melbourne
4.7 (31)
MCG
19,484
20 August 1955
3
Collingwood
7.17 (59)
Fitzroy
7.7 (49)
Victoria Park
19,270
20 August 1955
4
Carlton
10.6 (66)
Geelong
8.12 (60)
Princes Park
22,482
20 August 1955
5
St Kilda
6.7 (43)
Richmond
19.23 (137)
Junction Oval
13,000
20 August 1955
6
North Melbourne
5.5 (35)
Footscray
14.11 (95)
Arden Street Oval
20,000
20 August 1955
7
Hawthorn
7.8 (50)
Essendon
13.14 (92)
Glenferrie Oval
24,500
20 August 1955

Questions and formulas:
Question: What date was Richmond the away team?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="richmond"),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,C2:C7="richmond"),7))
Level: medium