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

### Instruction:
When was Göteborg the opponent with a score of 3-1?

### Inputs:
table_name: table, columns: ['Date', 'Venue', 'Opponents', 'Score', 'Comp', 'Attendance']

### Response:
SELECT Date FROM table WHERE Opponents = göteborg AND Score = 3-1