what is the difference between the time of the fastest runner and the slowest ?
CREATE TABLE table_204_81 (
    id number,
    "rank" number,
    "bib" number,
    "name" text,
    "country" text,
    "time" text,
    "deficit" text
)
SELECT "deficit" FROM table_204_81 ORDER BY "rank" 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: what is the difference between the time of the fastest runner and the slowest ? ### Input: CREATE TABLE table_204_81 (
    id number,
    "rank" number,
    "bib" number,
    "name" text,
    "country" text,
    "time" text,
    "deficit" text
) ### Response: SELECT "deficit" FROM table_204_81 ORDER BY "rank" DESC LIMIT 1