who has held the most records ?
CREATE TABLE table_204_550 (
    id number,
    "event" text,
    "record" text,
    "athlete" text,
    "date" text,
    "meet" text,
    "place" text
)
SELECT "athlete" FROM table_204_550 GROUP BY "athlete" 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: who has held the most records ? ### Input: CREATE TABLE table_204_550 (
    id number,
    "event" text,
    "record" text,
    "athlete" text,
    "date" text,
    "meet" text,
    "place" text
) ### Response: SELECT "athlete" FROM table_204_550 GROUP BY "athlete" ORDER BY COUNT(*) DESC LIMIT 1