user: Question: What was the longest carry for kevin clemens with under 31 yards total?
Columns: ['Player', 'Car.', 'Yards', 'Avg.', "TD's", 'Long']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Chris Robinson', 13.0, 58.0, 4.5, 3.0, 10.0]
SQL:

assistant: SELECT MAX("Long") FROM "Table" WHERE "Player" = 'kevin clemens' AND "Yards" < 31.0;