user: Question: What is the largest total with a Silver of 1, and a Rank larger than 7?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'South Africa', 25.0, 15.0, 12.0, 52.0]
SQL:

assistant: SELECT MAX("Total") FROM "Table" WHERE "Silver" = 1.0 AND "Rank" > 7.0;