user: Question: What is the rank of the country with total more than 3 and more than 6 silver?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Soviet Union', 3.0, 6.0, 3.0, 12.0]
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Total" > 3.0 AND "Silver" > 6.0;