Table:
0
A
B
C
D
E
1
Week
Date
Opponent
Result
Attendance
2
1
August 10, 1975
at San Francisco 49ers
L 17–13
45,560
3
2
August 16, 1975
Philadelphia Eagles
W 14–6
35,769
4
3
August 22, 1975
at Washington Redskins
L 23–14
15,513
5
4
September 1, 1975
Buffalo Bills
L 34–20
31,155
6
5
September 7, 1975
vs. New York Giants at Seattle
W 24–20
20,000
7
6
September 13, 1975
Detroit Lions
L 27–24
32,341

Questions and formulas:
Question: What day did the team play the buffalo bills?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="buffalo bills"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="buffalo bills"),2))
Level: medium