user: Question: What is the average bronze for less than 0 gold?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Soviet Union', 11.0, 13.0, 12.0, 36.0]
SQL:

assistant: SELECT AVG("Bronze") FROM "Table" WHERE "Gold" < 0.0;