user: Question: What's the rank average when the gold medals are less than 0?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Luxembourg (LUX)', 1.0, 1.0, 0.0, 2.0]
SQL:

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