Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
Elected
Status
Opponent
2
Minnesota1
Tim Penny
Democratic
1982
Re-elected
Tim Penny (D) 78.1% Doug Andersen (R) 21.9%
3
Minnesota2
Vin Weber
Republican
1980
Re-elected
Vin Weber (R) 61.8% Jim Stone (D) 38.1%
4
Minnesota3
Bill Frenzel
Republican
1970
Retired Republican hold
Jim Ramstad (R) 66.9% Lou DeMars (D) 32.9%
5
Minnesota4
Bruce Vento
Democratic
1976
Re-elected
Bruce Vento (D) 64.7% Ian Maitland (R) 35.1%
6
Minnesota6
Gerry Sikorski
Democratic
1982
Re-elected
Gerry Sikorski (D) 64.6% Bruce Anderson (R) 35.3%

Questions and formulas:
Question: What are the locations where the year of election is 1980?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1980),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6=1980),1))
Level: medium
Question: What location is Vin Weber from?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Vin Weber"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Vin Weber"),1))
Level: medium