user: Question: When the Gain is 29, and the average per game is 2, and the player lost less than 390 yards, what's the sum of the Long yards?
Columns: ['Name', 'Gain', 'Loss', 'Long', 'Avg/G']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Darren Sproles', 1517.0, 52.0, 80.0, 112.7]
SQL:

assistant: SELECT SUM("Long") FROM "Table" WHERE "Loss" < 390.0 AND "Avg/G" = 2.0 AND "Gain" > 29.0;