user: Question: What is the number in total of silver with a gold smaller than 0?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Thailand', 17.0, 19.0, 9.0, 45.0]
SQL:

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