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

### Instruction:
Score of 2-1, and a Competition of pl, and a Date of december 22, 2006 had what opponents?

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

### Response:
SELECT Opponents FROM table WHERE Score = 2-1 AND Competition = pl AND Date = december 22, 2006