user: Question: What date did Delage win?
Columns: ['Name', 'Circuit', 'Date', 'Winning driver', 'Winning constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['São Paulo Grand Prix', 'Interlagos', '5 January', 'Chico Landi', 'Alfa Romeo', 'Report']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winning constructor" = 'Delage';