user: Question: What is the candidates for Fred E. Busbey?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Illinois 2', 'Richard B. Vail', 'Republican', 1950.0, 'Lost re-election Democratic gain', "Barratt O'Hara (D) 51.4% Richard B. Vail (R) 48.6%"]
SQL:

assistant: SELECT "Candidates" FROM "Table" WHERE "Incumbent" = 'Fred E. Busbey';