how many directors had the episode called 'magic unmasked'?
CREATE TABLE table_29683 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (millions)" text,
    "Original U.S. air date" text,
    "Prod. code" text
)
SELECT COUNT("Directed by") FROM table_29683 WHERE "Title" = 'Magic Unmasked'
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 directors had the episode called 'magic unmasked'? ### Input: CREATE TABLE table_29683 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (millions)" text,
    "Original U.S. air date" text,
    "Prod. code" text
) ### Response: SELECT COUNT("Directed by") FROM table_29683 WHERE "Title" = 'Magic Unmasked'