who directed the episode that 6.3 million u.s. viewers saw?
CREATE TABLE table_74202 (
    "No. in series" text,
    "No. in season" text,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Prod. code" text,
    "U.S. viewers (millions)" text
)
SELECT "Directed by" FROM table_74202 WHERE "U.S. viewers (millions)" = '6.3'
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: who directed the episode that 6.3 million u.s. viewers saw? ### Input: CREATE TABLE table_74202 (
    "No. in series" text,
    "No. in season" text,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Prod. code" text,
    "U.S. viewers (millions)" text
) ### Response: SELECT "Directed by" FROM table_74202 WHERE "U.S. viewers (millions)" = '6.3'