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

### Instruction:
December smaller than 14, and a Game smaller than 28, and a Score of 6 - 6 involved what opponent?

### Inputs:
table_name: table, columns: ['Game', 'December', 'Opponent', 'Score', 'Record']

### Response:
SELECT Opponent FROM table WHERE December < 14 AND Game < 28 AND Score = 6 - 6