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_67 (week INTEGER, date VARCHAR)
### Question:
Which Week has a Date of december 8, 1991?
### Answer:
SELECT AVG(week) FROM table_name_67 WHERE date = "december 8, 1991"