which type of terrain is listed the most ?
CREATE TABLE table_204_312 (
    id number,
    "stage" text,
    "date" text,
    "route" text,
    "terrain" text,
    "length" text,
    "winner" text
)
SELECT "terrain" FROM table_204_312 GROUP BY "terrain" ORDER BY COUNT(*) DESC LIMIT 1
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 type of terrain is listed the most ? ### Input: CREATE TABLE table_204_312 (
    id number,
    "stage" text,
    "date" text,
    "route" text,
    "terrain" text,
    "length" text,
    "winner" text
) ### Response: SELECT "terrain" FROM table_204_312 GROUP BY "terrain" ORDER BY COUNT(*) DESC LIMIT 1