user: Question: What was the average attendance when Chicago Bears were the home team?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['September 30', 'Cleveland Browns', '24-10', 'San Francisco 49ers', '1-0-0', 48263.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Home" = 'Chicago Bears';