How many viewers in millions did the Alison McDonald episode get?
CREATE TABLE table_26961951_4 (
    us_viewers__million_ VARCHAR,
    written_by VARCHAR
)
SELECT us_viewers__million_ FROM table_26961951_4 WHERE written_by = "Alison McDonald"
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 viewers in millions did the Alison McDonald episode get? ### Input: CREATE TABLE table_26961951_4 (
    us_viewers__million_ VARCHAR,
    written_by VARCHAR
) ### Response: SELECT us_viewers__million_ FROM table_26961951_4 WHERE written_by = "Alison McDonald"