user: Question: What are the average net yards that have 9 as the touchdowns, 145 as the attempts, and yards per attempt greater than 4.8?
Columns: ['Player', 'Attempts', 'Net yards', 'Yards per attempt', 'Touchdowns']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Mel Anthony', 145.0, 702.0, 4.8, 9.0]
SQL:

assistant: SELECT AVG("Net yards") FROM "Table" WHERE "Touchdowns" = 9.0 AND "Attempts" = 145.0 AND "Yards per attempt" > 4.8;