user: Question: How many silver medals were won by the participant(s) that had more than 12 gold medals and 11 bronze medals?
Columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 84.0, 69.0, 69.0, 222.0]
SQL:

assistant: SELECT SUM("Silver") FROM "Table" WHERE "Gold" > 12.0 AND "Bronze" = 11.0;