What is listed for the Lengtht that has a Version of Single Version?
CREATE TABLE table_4994 (
    "Version" text,
    "Length" text,
    "Album" text,
    "Remixed by" text,
    "Year" real
)
SELECT "Length" FROM table_4994 WHERE "Version" = 'single version'
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 listed for the Lengtht that has a Version of Single Version? ### Input: CREATE TABLE table_4994 (
    "Version" text,
    "Length" text,
    "Album" text,
    "Remixed by" text,
    "Year" real
) ### Response: SELECT "Length" FROM table_4994 WHERE "Version" = 'single version'