Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Indiana 1
Ray J. Madden
Democratic
1942
Re-elected
Ray J. Madden (D) 58.3% Albert Harrigan (R) 41.7%
3
Indiana 3
John Brademas
Democratic
1958
Re-elected
John Brademas (D) 55.8% Robert A. Ehlers (R) 44.2%
4
Indiana 4
E. Ross Adair
Republican
1950
Re-elected
E. Ross Adair (R) 63.5% J. Byron Hayes (D) 36.5%
5
Indiana 5
J. Edward Roush
Democratic
1958
Re-elected
J. Edward Roush (D) 51.1% Kenneth Bowman (R) 48.9%
6
Indiana 7
None (District created)
None (District created)
None (District created)
New seat Republican gain
John T. Myers (R) 54.3% Elden C. Tipton (D) 45.7%

Questions and formulas:
Question: Who's the incumbent of Indiana 4 district?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Indiana 4"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="Indiana 4"),2))
Level: medium
Question: Who's the incumbent of the district with first election held in 1950?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1950),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6=1950),2))
Level: medium