user: Question: switzerland has how many gold and less than 0 silver?
Columns: ['Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Belgium', 2.0, 2.0, 1.0, 5.0]
SQL:

assistant: SELECT "Gold" FROM "Table" WHERE "Nation" = 'switzerland' AND "Silver" < 0.0;