Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
South Carolina 1
L. Mendel Rivers
Democratic
1940
Re-elected
L. Mendel Rivers (D) Unopposed
3
South Carolina 2
John J. Riley
Democratic
1950
Re-elected
John J. Riley (D) Unopposed
4
South Carolina 3
William Jennings Bryan Dorn
Democratic
1950
Re-elected
William Jennings Bryan Dorn (D) Unopposed
5
South Carolina 4
Robert T. Ashmore
Democratic
1953
Re-elected
Robert T. Ashmore (D) Unopposed
6
South Carolina 5
Robert W. Hemphill
Democratic
1956
Re-elected
Robert W. Hemphill (D) Unopposed

Questions and formulas:
Question: How many candidates were there in the election for William Jennings Bryan Dorn's seat?
Formula: ROWS(UNIQUE(FILTER(F1, B1="William Jennings Bryan Dorn")))
Formula2: ROWS(UNIQUE(FILTER(F2:F6, B2:B6="William Jennings Bryan Dorn")))
Level: medium
Question: What is the earliest year that a candidate was first elected?
Formula: MIN(D1)
Formula2: MIN(D2:D6)
Level: easy