Table:
0
A
B
C
D
E
1
Date
Opponent
Site
Result
Attendance
2
09/26/1931
North Dakota State
Memorial Stadium • Minneapolis, MN
W13-7
15,000
3
09/26/1931
Ripon
Memorial Stadium • Minneapolis, MN
W30-0
15,000
4
10/03/1931
Oklahoma A&M
Memorial Stadium • Minneapolis, MN
W20-0
20,000
5
10/10/1931
at Stanford
Stanford Stadium • Palo Alto, CA
L13-7
54,787
6
10/24/1931
Iowa
Memorial Stadium • Minneapolis, MN
W34-0
25,000
7
10/31/1931
Wisconsin
Memorial Stadium • Minneapolis, MN
W14-0
52,000
8
11/07/1931
at Northwestern
Dyche Stadium • Evanston, IL
L14-32
42,000
9
11/14/1931
Cornell (IA)
Memorial Stadium • Minneapolis, MN
W47-7
10,000
10
11/21/1931
at Michigan
Michigan Stadium • Ann Arbor, MI
L0-6
37,251
11
11/28/1931
Ohio State
Memorial Stadium • Minneapolis, MN
W19-7
25,000
12
*Non-conference game. Homecoming.
*Non-conference game. Homecoming.
*Non-conference game. Homecoming.
*Non-conference game. Homecoming.
*Non-conference game. Homecoming.

Questions and formulas:
Question: Where did the game(s) against Iowa take place?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="iowa"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,B2:B12="iowa"),3))
Level: medium