user: Question: What is the largest silver with less than 0 gold?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Nigeria', 9.0, 8.0, 7.0, 24.0]
SQL:

assistant: SELECT MAX("Silver") FROM "Table" WHERE "Gold" < 0.0;