What episode was written by Matt Maclennan?
CREATE TABLE table_27155243_4 (
    episode__number INTEGER,
    written_by VARCHAR
)
SELECT MAX(episode__number) FROM table_27155243_4 WHERE written_by = "Matt MacLennan"
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: What episode was written by Matt Maclennan? ### Input: CREATE TABLE table_27155243_4 (
    episode__number INTEGER,
    written_by VARCHAR
) ### Response: SELECT MAX(episode__number) FROM table_27155243_4 WHERE written_by = "Matt MacLennan"