Which Week has an Opponent of san francisco 49ers?
CREATE TABLE table_name_46 (
    week INTEGER,
    opponent VARCHAR
)
SELECT MAX(week) FROM table_name_46 WHERE opponent = "san francisco 49ers"
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: Which Week has an Opponent of san francisco 49ers? ### Input: CREATE TABLE table_name_46 (
    week INTEGER,
    opponent VARCHAR
) ### Response: SELECT MAX(week) FROM table_name_46 WHERE opponent = "san francisco 49ers"