user: Question: Name the average clean and jerk for snatch of 140 and total kg less than 315
Columns: ['Name', 'Bodyweight', 'Snatch', 'Clean & jerk', 'Total (kg)']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Rolando Delgado ( CUB )', 68.43, 142.5, 175.0, 317.5]
SQL:

assistant: SELECT AVG("Clean & jerk") FROM "Table" WHERE "Snatch" = 140.0 AND "Total (kg)" < 315.0;