user: Question: What is the sum for the int yards that has an assts more than 3, and player Jay Alford?
Columns: ['Player', 'Tackles', 'Solo', 'Assts', 'Sacks', 'Int yards', 'Int avg.', 'Int TD', 'Fum. rec', 'Fum. rec TD']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Antonio Pierce', 65.0, 50.0, 15.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0]
SQL:

assistant: SELECT SUM("Int yards") FROM "Table" WHERE "Assts" > 3.0 AND "Player" = 'Jay Alford';