Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Ohio 5
Del Latta
Republican
1958
Re-elected
Del Latta (R) 71.1% Carl G. Sherer (D) 28.9%
3
Ohio 6
Bill Harsha
Republican
1960
Re-elected
Bill Harsha (R) 67.8% Raymond H. Stevens (D) 32.2%
4
Ohio 8
Jackson Edward Betts
Republican
1950
Re-elected
Jackson Edward Betts (R) Unopposed
5
Ohio 10
Clarence E. Miller
Republican
1966
Re-elected
Clarence E. Miller (R) 66.5% Doug Arnett (D) 33.5%
6
Ohio 11
J. William Stanton
Republican
1964
Re-elected
J. William Stanton (R) 68.2% Ralph Rudd (D) 31.8%
7
Ohio 16
Frank T. Bow
Republican
1950
Re-elected
Frank T. Bow (R) 56.2% Virgil L. Musser (D) 43.8%
8
Ohio 18
Wayne L. Hays
Democratic
1948
Re-elected
Wayne L. Hays (D) 68.3% Robert Stewart (R) 31.7%
9
Ohio 21
Louis Stokes
Democratic
1968
Re-elected
Louis Stokes (D) 77.6% Bill Mack (R) 22.4%

Questions and formulas:
Question: Incumbent Bill Harsha was the winner in an election in which the candidates were who?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Bill Harsha"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,B2:B9="Bill Harsha"),6))
Level: medium