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

### Instruction:
Which opponent completed a challenge competition with a result of 8-2 w?

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

### Response:
SELECT Opponent FROM table WHERE Competition = challenge AND Result = 8-2 w