user: Question: What is the average number of golds for teams in rank 17 with more than 4 silver?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'United States (USA)', 89.0, 88.0, 60.0, 237.0]
SQL:

assistant: SELECT AVG("Gold") FROM "Table" WHERE "Rank" = '17' AND "Silver" > 4.0;