user: ### NOW ANSWER:
Question: Which Total has a Rank of 4, and a Silver smaller than 4?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Bulgaria', 19.0, 13.0, 9.0, 41.0]
SQL:

assistant: SELECT AVG("Total") FROM "Table" WHERE "Rank" = '4' AND "Silver" < 4.0;