user: ### NOW ANSWER:
Question: Which Silver has a Total of 1, and a Rank of 12?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Soviet Union', 8.0, 2.0, 1.0, 11.0]
SQL:

assistant: SELECT MIN("Silver") FROM "Table" WHERE "Total" = 1.0 AND "Rank" = '12';