user: Question: What is the sum for the long that has 926 yards and an avg/g less than 84.2?
Columns: ['Name', 'GP-GS', 'Yards', 'Long', 'Avg/G']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['Darren Evans', '3-0', 926.0, 50.0, 84.2]
SQL:

assistant: SELECT SUM("Long") FROM "Table" WHERE "Yards" = 926.0 AND "Avg/G" < 84.2;