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_5 (attendance INTEGER, week VARCHAR, result VARCHAR)
### Question:
What is the attendance in a week earlier than 4, and result is w 31-20?
### Answer:
SELECT AVG(attendance) FROM table_name_5 WHERE week < 4 AND result = "w 31-20"