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_12 (week VARCHAR, opponent VARCHAR, attendance VARCHAR)
### Question:
How many weeks have an Opponent of at san francisco 49ers, and an Attendance smaller than 34,354?
### Answer:
SELECT COUNT(week) FROM table_name_12 WHERE opponent = "at san francisco 49ers" AND attendance < 34 OFFSET 354