user: Question: Can you tell me the sum of Gain that has the Name of Kass, Rob, and the Avg/g smaller than 1.9?
Columns: ['Name', 'Gain', 'Loss', 'Long', 'Avg/g']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Johnson, Chris', 1468.0, 45.0, 70.0, 109.5]
SQL:

assistant: SELECT SUM("Gain") FROM "Table" WHERE "Name" = 'Kass, Rob' AND "Avg/g" < 1.9;