user: Question: Name the winning driver for Havana
Columns: ['Name', 'Circuit', 'Date', 'Winning driver', 'Winning constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Cuban Race', 'Havana', '12 February', 'Victor Demogeot', 'Darracq', 'Report']
SQL:

assistant: SELECT "Winning driver" FROM "Table" WHERE "Circuit" = 'Havana';