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_41 (week INTEGER, date VARCHAR, attendance VARCHAR)
### Question:
Who was the opponent on the date of November 29, 1970 and the attendance was less than 31,427?
### Answer:
SELECT AVG(week) FROM table_name_41 WHERE date = "november 29, 1970" AND attendance < 31 OFFSET 427