user: Question: Name the least silver for nation of total when bronze is more than 24
Columns: ['Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['United States (USA)', 9.0, 10.0, 4.0, 23.0]
SQL:

assistant: SELECT MIN("Silver") FROM "Table" WHERE "Nation" = 'total' AND "Bronze" > 24.0;