user: Question: What is the least amount of silver when there is less than 0 bronze?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Canada (CAN) *', 14.0, 7.0, 5.0, 26.0]
SQL:

assistant: SELECT MIN("Silver") FROM "Table" WHERE "Bronze" < 0.0;