who were the writers of the episode that had 5.56 millions of north american viewers?
CREATE TABLE table_30105 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (millions)" text
)
SELECT "Written by" FROM table_30105 WHERE "U.S. viewers (millions)" = '5.56'
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 were the writers of the episode that had 5.56 millions of north american viewers? ### Input: CREATE TABLE table_30105 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (millions)" text
) ### Response: SELECT "Written by" FROM table_30105 WHERE "U.S. viewers (millions)" = '5.56'