user: Question: HOW MANY SILVER METALS DOES south korea HAVE WITH 2 GOLD METALS?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'South Korea', 2.0, 2.0, 0.0, 4.0]
SQL:

assistant: SELECT "Silver" FROM "Table" WHERE "Nation" = 'south korea' AND "Gold" > 2.0;