user: Question: What was the attendance of the game on december 13, 1970?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 20, 1970', 'Miami Dolphins', 'W 27–14', 32607.0]
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Date" = 'december 13, 1970' AND "Week" > 13.0;