What was the US Peak position of the film that peaked at #21 in the UK?
CREATE TABLE table_15008 (
    "Film" text,
    "Year" real,
    "Score composer" text,
    "U.K. peak position" text,
    "U.S. peak position" text
)
SELECT "U.S. peak position" FROM table_15008 WHERE "U.K. peak position" = '21'
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 was the US Peak position of the film that peaked at #21 in the UK? ### Input: CREATE TABLE table_15008 (
    "Film" text,
    "Year" real,
    "Score composer" text,
    "U.K. peak position" text,
    "U.S. peak position" text
) ### Response: SELECT "U.S. peak position" FROM table_15008 WHERE "U.K. peak position" = '21'