user: Question: What candidates ran in the election when John S. Wood was the incumbent?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Georgia 1', 'Homer C. Parker', 'Democratic', 1931.0, 'Lost renomination Democratic hold', 'Hugh Peterson (D) Unopposed']
SQL:

assistant: SELECT "Candidates" FROM "Table" WHERE "Incumbent" = 'John S. Wood';