user: Question: How many silver medals were awarded to the Nation with less than 2 gold, more than 6 bronze and a rank higher than 5?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Soviet Union', 25.0, 19.0, 8.0, 52.0]
SQL:

assistant: SELECT SUM("Silver") FROM "Table" WHERE "Rank" > 5.0 AND "Bronze" > 6.0 AND "Gold" < 2.0;