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

### Instruction:
What is the average Loss for the long of more than 12 with a name of opponents with a Gain larger than 1751?

### Inputs:
table_name: table, columns: ['Name', 'GP-GS', 'Gain', 'Loss', 'Long', 'Avg/G']

### Response:
SELECT AVG Loss FROM table WHERE Long > 12 AND Name = opponents AND Gain > 1751