Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Louisiana 1
James O'Connor
Democratic
1918
Re-elected
James O'Connor (D) Unopposed
3
Louisiana 2
Henry Garland Dupré
Democratic
1908
Re-elected
Henry Garland Dupré (D) Unopposed
4
Louisiana 3
Whitmell P. Martin
Democratic
1914
Re-elected
Whitmell P. Martin (D) Unopposed
5
Louisiana 4
John N. Sandlin
Democratic
1920
Re-elected
John N. Sandlin (D) Unopposed
6
Louisiana 5
Riley Joseph Wilson
Democratic
1914
Re-elected
Riley Joseph Wilson (D) Unopposed
7
Louisiana 6
George K. Favrot
Democratic
1920
Re-elected
George K. Favrot (D) Unopposed
8
Louisiana 7
Ladislas Lazaro
Democratic
1912
Re-elected
Ladislas Lazaro (D) Unopposed

Questions and formulas:
Question: How many candidates won the election of john n. sandlin?
Formula: ROWS(UNIQUE(FILTER(F1, B1="John N. Sandlin")))
Formula2: ROWS(UNIQUE(FILTER(F2:F8, B2:B8="John N. Sandlin")))
Level: medium
Question: Who was the incumbent in the election of henry garland dupré (d) unopposed?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="Henry Garland Dupré (D) Unopposed"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,F2:F8="Henry Garland Dupré (D) Unopposed"),2))
Level: medium