user: Question: What is the lowest gain with an 18 long, and a loss less than 191?
Columns: ['Name', 'GP-GS', 'Gain', 'Loss', 'Long', 'Avg/G']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Anthony Dixon', '12-12', 930.0, 61.0, 71.0, 72.4]
SQL:

assistant: SELECT MIN("Gain") FROM "Table" WHERE "Long" = 18.0 AND "Loss" < 191.0;