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

### Instruction:
When has a Result of l 27-7 and an Opponent of at minnesota vikings?

### Inputs:
table_name: table, columns: ['Week', 'Date', 'Opponent', 'Result', 'Venue', 'Attendance']

### Response:
SELECT Date FROM table WHERE Result = l 27-7 AND Opponent = at minnesota vikings