Who wrote episode 11?
CREATE TABLE table_21730 (
    "Series #" real,
    "Episode #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (million)" text,
    "Original airdate" text,
    "Production Code" text
)
SELECT "Written by" FROM table_21730 WHERE "Episode #" = '11'
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 wrote episode 11? ### Input: CREATE TABLE table_21730 (
    "Series #" real,
    "Episode #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "U.S. viewers (million)" text,
    "Original airdate" text,
    "Production Code" text
) ### Response: SELECT "Written by" FROM table_21730 WHERE "Episode #" = '11'