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
10.8 (68)
Richmond
9.11 (65)
MCG
18,048
6 July 1929
3
Footscray
9.13 (67)
Geelong
9.5 (59)
Western Oval
9,000
6 July 1929
4
Fitzroy
12.14 (86)
South Melbourne
17.8 (110)
Brunswick Street Oval
6,000
6 July 1929
5
North Melbourne
8.6 (54)
Hawthorn
8.18 (66)
Arden Street Oval
4,500
6 July 1929
6
St Kilda
9.9 (63)
Essendon
7.6 (48)
Junction Oval
12,500
6 July 1929
7
Collingwood
15.15 (105)
Carlton
11.10 (76)
Victoria Park
33,000
6 July 1929

Questions and formulas:
Question: Where did Essendon play as the away team?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="essendon"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,C2:C7="essendon"),5))
Level: medium