user: Question: What is the average Total, when Silver is greater than 4, and when Gold is greater than 16?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Soviet Union', 9.0, 1.0, 1.0, 11.0]
SQL:

assistant: SELECT AVG("Total") FROM "Table" WHERE "Silver" > 4.0 AND "Gold" > 16.0;