Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Louisiana 1
F. Edward Hebert
Democratic
1940
Re-elected
F. Edward Hebert (D) Unopposed
3
Louisiana 2
Hale Boggs
Democratic
1946
Re-elected
Hale Boggs (D) 51.2% David C. Treen (R) 48.8%
4
Louisiana 3
Edwin E. Willis
Democratic
1948
Lost renomination Democratic hold
Patrick T. Caffery (D) Unopposed
5
Louisiana 4
Joe Waggonner
Democratic
1961
Re-elected
Joe Waggonner (D) Unopposed
6
Louisiana 5
Otto Passman
Democratic
1946
Re-elected
Otto Passman (D) Unopposed
7
Louisiana 6
John Rarick
Democratic
1966
Re-elected
John Rarick (D) 79.3% Loyd J. Rockhold (R) 20.7%
8
Louisiana 7
Edwin Edwards
Democratic
1965
Re-elected
Edwin Edwards (D) 84.9% Vance W. Plauche (R) 15.1%

Questions and formulas:
Question: What district did Joe Waggonner belong to?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Joe Waggonner"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,B2:B8="Joe Waggonner"),1))
Level: medium
Question: What is the name of the incumbent who was first eleccted in 1940?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1940),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,D2:D8=1940),2))
Level: medium