user: Question: What's the average men's wheelchair when women's wheelchair is less than 0?
Columns: ['Country', "Men's race", "Women's race", "Men's wheelchair", "Women's Wheelchair", 'Total']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['United Kingdom', 6.0, 7.0, 13.0, 14.0, 40.0]
SQL:

assistant: SELECT AVG("Men's wheelchair") FROM "Table" WHERE "Women's Wheelchair" < 0.0;