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

### Instruction:
Who was the opponent when the result was ud 12/12 and date was 1993-05-22?

### Inputs:
table_name: table, columns: ['Number', 'Name', 'Titles', 'Date', 'Opponent', 'Result', 'Defenses']

### Response:
SELECT Opponent FROM table WHERE Result = UD 12/12 AND Date = 1993-05-22