user: Question: Incumbent Bill Harsha was the winner in an election in which the candidates were who?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Ohio 5', 'Del Latta', 'Republican', 1958.0, 'Re-elected', 'Del Latta (R) 71.1% Carl G. Sherer (D) 28.9%']
SQL:

assistant: SELECT "Candidates" FROM "Table" WHERE "Incumbent" = 'Bill Harsha';