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

### Instruction:
What is the lowest gain with an 18 long, and a loss less than 191?

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

### Response:
SELECT MIN Gain FROM table WHERE Long = 18 AND Loss < 191