What is the series sorted value for the episode released December 2009?
CREATE TABLE table_47745 (
    "Series Sorted" text,
    "Title" text,
    "Doctor" text,
    "Featuring" text,
    "Released" text
)
SELECT "Series Sorted" FROM table_47745 WHERE "Released" = 'december 2009'
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: What is the series sorted value for the episode released December 2009? ### Input: CREATE TABLE table_47745 (
    "Series Sorted" text,
    "Title" text,
    "Doctor" text,
    "Featuring" text,
    "Released" text
) ### Response: SELECT "Series Sorted" FROM table_47745 WHERE "Released" = 'december 2009'