What is the total number of episodes aired in Canada on 22 October 2004?
CREATE TABLE table_5257 (
    "Episode" real,
    "Title" text,
    "Airdate (Canada)" text,
    "Airdate (USA)" text,
    "CBS airdate" text
)
SELECT COUNT("Episode") FROM table_5257 WHERE "Airdate (Canada)" = '22 october 2004'
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 total number of episodes aired in Canada on 22 October 2004? ### Input: CREATE TABLE table_5257 (
    "Episode" real,
    "Title" text,
    "Airdate (Canada)" text,
    "Airdate (USA)" text,
    "CBS airdate" text
) ### Response: SELECT COUNT("Episode") FROM table_5257 WHERE "Airdate (Canada)" = '22 october 2004'