user: Question: What is the total silver when bronze is smaller than 0?
Columns: ['Country', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Thailand', 2.0, 2.0, 1.0, 5.0]
SQL:

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