user: Question: What is the average total with a Rank larger than 11, a Nation of switzerland, and a Silver smaller than 0?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'France', 33.0, 20.0, 11.0, 64.0]
SQL:

assistant: SELECT AVG("Total") FROM "Table" WHERE "Rank" > 11.0 AND "Nation" = 'switzerland' AND "Silver" < 0.0;