user: Question: What is the number of bronze medals when there are fewer than 0 silver medals?
Columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['1', 4.0, 1.0, 2.0, 7.0]
SQL:

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