Which route has 21 stations?
CREATE TABLE table_10680 (
    "Line" text,
    "Colour" text,
    "Route" text,
    "Length" text,
    "Stations" real
)
SELECT "Route" FROM table_10680 WHERE "Stations" = '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: Which route has 21 stations? ### Input: CREATE TABLE table_10680 (
    "Line" text,
    "Colour" text,
    "Route" text,
    "Length" text,
    "Stations" real
) ### Response: SELECT "Route" FROM table_10680 WHERE "Stations" = '21'