Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
North Carolina 2
Tim Valentine
Democratic
1982
Re-elected
Tim Valentine (D) Unopposed
3
North Carolina 3
Martin Lancaster
Democratic
1986
Re-elected
Martin Lancaster (D) Unopposed
4
North Carolina 4
David E. Price
Democratic
1986
Re-elected
David E. Price (D) 58.0% Tom Fetzer (R) 42.0%
5
North Carolina 5
Stephen L. Neal
Democratic
1974
Re-elected
Stephen L. Neal (D) 52.6% Lyons Gray (R) 47.4%
6
North Carolina 6
Howard Coble
Republican
1984
Re-elected
Howard Coble (R) 62.5% Tom Gilmore (D) 37.5%
7
North Carolina 8
Bill Hefner
Democratic
1974
Re-elected
Bill Hefner (D) 51.5% Ted Blanton (R) 48.5%
8
North Carolina 9
Alex McMillan
Republican
1984
Re-elected
Alex McMillan (R) 65.9% Mark Sholander (D) 34.1%

Questions and formulas:
Question: Who were all the candidates when incumbent was Tim Valentine?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Tim Valentine"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,B2:B8="Tim Valentine"),6))
Level: medium