user: ### NOW ANSWER:
Question: Name the  Silver that has a Total smaller than 2, and a Nation of South Korea?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Soviet Union', 10.0, 2.0, 6.0, 18.0]
SQL:

assistant: SELECT AVG("Silver") FROM "Table" WHERE "Total" < 2.0 AND "Nation" = 'South Korea';