Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
Elected
Status
Opponent
2
Washington1
John Miller
Republican
1984
Re-elected
John Miller (R) 52.0% Cynthia Sullivan (D) 48.0%
3
Washington3
Jolene Unsoeld
Democratic
1988
Re-elected
Jolene Unsoeld (D) 53.8% Robert Williams (R) 46.2%
4
Washington4
Sid Morrison
Republican
1980
Re-elected
Sid Morrison (R) 70.7% Ole H. Hougen (D) 29.3%
5
Washington5
Tom Foley
Democratic
1964
Re-elected
Tom Foley (D) 68.8% Marlyn Derby (R) 31.2%
6
Washington6
Norman D. Dicks
Democratic
1976
Re-elected
Norman D. Dicks (D) 61.4% Norman Mueller (R) 38.6%

Questions and formulas:
Question: How many parties is Tom Foley a member of?
Formula: ROWS(UNIQUE(FILTER(C1, B1="Tom Foley")))
Formula2: ROWS(UNIQUE(FILTER(C2:C6, B2:B6="Tom Foley")))
Level: medium
Question: What was the result of the election in the district whose incumbent is Tom Foley?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Tom Foley"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Tom Foley"),5))
Level: medium