user: Question: What is the lowest total that has a rank less than 8, a silver greater than 6, and 20 as the bronze?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Soviet Union (URS)', 33.0, 29.0, 26.0, 88.0]
SQL:

assistant: SELECT MIN("Total") FROM "Table" WHERE "Rank" < 8.0 AND "Silver" > 6.0 AND "Bronze" = 20.0;