Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
Elected
Status
Opponent
2
North Carolina2
Tim Valentine
Democratic
1982
Re-elected
Tim Valentine (D) 74.7% Hal C. Sharpe (R) 25.3%
3
North Carolina3
Martin Lancaster
Democratic
1986
Re-elected
Martin Lancaster (D) 59.3% Don Davis (R) 40.7%
4
North Carolina4
David Price
Democratic
1986
Re-elected
David Price (D) 58.1% John H. Carrington (R) 41.9%
5
North Carolina5
Stephen L. Neal
Democratic
1974
Re-elected
Stephen L. Neal (D) 59.1% Ken Bell (R) 40.9%
6
North Carolina6
Howard Coble
Republican
1984
Re-elected
Howard Coble (R) 66.6% Helen Allegrone (D) 33.4%

Questions and formulas:
Question: What party did incumbent Howard Coble belong to?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Howard Coble"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Howard Coble"),3))
Level: medium
Question: What party did incumbent Stephen L. Neal belong to? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Stephen L. Neal"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Stephen L. Neal"),3))
Level: medium
Question: In how many districts was the democratic incumbent elected in 1974? 
Formula: ROWS(UNIQUE(FILTER(A1, (C1="Democratic")*(D1=1974))))
Formula2: ROWS(UNIQUE(FILTER(A2:A6, (C2:C6="Democratic")*(D2:D6=1974))))
Level: medium
Question: What year was incumbent Martin Lancaster elected? 
Formula: MINIFS(D1,B1,"Martin Lancaster")
Formula2: MINIFS(D2:D6,B2:B6,"Martin Lancaster")
Level: easy