user: Question: On what date did Aymo Maggi win the Rome Grand Prix ?
Columns: ['Name', 'Circuit', 'Date', 'Winning driver', 'Winning constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Pozzo Circuit', 'Verona', '21 March', 'Alessandro Consonno', 'Bugatti', 'Report']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winning driver" = 'Aymo Maggi' AND "Name" = 'Rome Grand Prix';