In which season did Paul McCrane first direct an episode?
CREATE TABLE table_21633 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
)
SELECT MIN("Season #") FROM table_21633 WHERE "Directed by" = 'Paul McCrane'
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: In which season did Paul McCrane first direct an episode? ### Input: CREATE TABLE table_21633 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
) ### Response: SELECT MIN("Season #") FROM table_21633 WHERE "Directed by" = 'Paul McCrane'