user: Question: What date was the Circuit of Indianapolis?
Columns: ['Race', 'Circuit', 'Date', 'Pole position', 'Winning driver', 'Constructor', 'Tyre', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Argentine Grand Prix', 'Buenos Aires', '17 January', 'Giuseppe Farina', 'Juan Manuel Fangio', 'Maserati', 'P', 'Report']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Circuit" = 'Indianapolis';