Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Arkansas 1
Thaddeus H. Caraway
Democratic
1912
Re-elected
Thaddeus H. Caraway (D) Unopposed
3
Arkansas 2
William A. Oldfield
Democratic
1908
Re-elected
William A. Oldfield (D) Unopposed
4
Arkansas 3
John N. Tillman
Democratic
1914
Re-elected
John N. Tillman (D) Unopposed
5
Arkansas 4
Otis Wingo
Democratic
1912
Re-elected
Otis Wingo (D) Unopposed
6
Arkansas 5
Henderson M. Jacoway
Democratic
1910
Re-elected
Henderson M. Jacoway (D) Unopposed
7
Arkansas 6
Samuel M. Taylor
Democratic
1913
Re-elected
Samuel M. Taylor (D) Unopposed

Questions and formulas:
Question: When was incumbent John N. Tillman first elected?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="John N. Tillman"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,B2:B7="John N. Tillman"),4))
Level: medium