user: Question: what is the highest silver when the total is 4 and bronze is less than 1?
Columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'real', 'real', 'real', 'text']
Sample row: ['1', 18.0, 11.0, 10.0, '39']
SQL:

assistant: SELECT MAX("Silver") FROM "Table" WHERE "Total" = '4' AND "Bronze" < 1.0;