How many weeks have an Opponent of at san francisco 49ers, and an Attendance smaller than 34,354?
CREATE TABLE table_name_12 (
    week VARCHAR,
    opponent VARCHAR,
    attendance VARCHAR
)
SELECT COUNT(week) FROM table_name_12 WHERE opponent = "at san francisco 49ers" AND attendance < 34 OFFSET 354
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many weeks have an Opponent of at san francisco 49ers, and an Attendance smaller than 34,354? ### Input: CREATE TABLE table_name_12 (
    week VARCHAR,
    opponent VARCHAR,
    attendance VARCHAR
) ### Response: SELECT COUNT(week) FROM table_name_12 WHERE opponent = "at san francisco 49ers" AND attendance < 34 OFFSET 354