user: Question: How many people attended the game on December 20, 1964?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 12, 1964', 'Houston Oilers', 'W 27–21', 22632.0]
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Date" = 'December 20, 1964';