Which episode did actor A. J. Buckley last appear in?
CREATE TABLE table_11240028_1 (
    last_appearance VARCHAR,
    portrayed_by VARCHAR
)
SELECT last_appearance FROM table_11240028_1 WHERE portrayed_by = "A. J. Buckley"
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 episode did actor A. J. Buckley last appear in? ### Input: CREATE TABLE table_11240028_1 (
    last_appearance VARCHAR,
    portrayed_by VARCHAR
) ### Response: SELECT last_appearance FROM table_11240028_1 WHERE portrayed_by = "A. J. Buckley"