Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What was the date of the game played at Gillette Stadium with a score of 40-21?

### Inputs:
table_name: table, columns: ['Year', 'Date', 'Winner', 'Result', 'Loser', 'Location']

### Response:
SELECT Date FROM table WHERE Location = gillette stadium AND Result = 40-21