user: Question: What is the total number of silver medals for nations with 5 total medals and more than 3 gold medals?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Soviet Union', 7.0, 4.0, 1.0, 12.0]
SQL:

assistant: SELECT SUM("Silver") FROM "Table" WHERE "Total" = 5.0 AND "Gold" > 3.0;