user: ### NOW ANSWER:
Question: What is the total medals for nation with more than 0 silvers and more than 0 golds?
Columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 4.0, 0.0, 0.0, 4.0]
SQL:

assistant: SELECT AVG("Total") FROM "Table" WHERE "Silver" > 0.0 AND "Gold" > 0.0;