Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_40 (attendance INTEGER, date VARCHAR, week VARCHAR)
### Question:
What was the average number of attendance for the game on November 29, 1981 played after week 13?
### Answer:
SELECT AVG(attendance) FROM table_name_40 WHERE date = "november 29, 1981" AND week > 13