user: Question: What is the highest number of Silver medals with a Total greater than 14 and more than 15 Bronze medals?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Brazil', 17.0, 18.0, 15.0, 50.0]
SQL:

assistant: SELECT MAX("Silver") FROM "Table" WHERE "Total" > 14.0 AND "Bronze" > 15.0;