user: Question: What is the average attendance for the game on September 26, 1976?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 12, 1976', 'San Francisco 49ers', 'L 26–14', 'Lambeau Field', 54628.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Date" = 'September 26, 1976';