On how many dates was the complete 4th series released?
CREATE TABLE table_17798548_4 (
    date_released VARCHAR,
    season VARCHAR
)
SELECT COUNT(date_released) FROM table_17798548_4 WHERE season = "The Complete 4th Series"
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: On how many dates was the complete 4th series released? ### Input: CREATE TABLE table_17798548_4 (
    date_released VARCHAR,
    season VARCHAR
) ### Response: SELECT COUNT(date_released) FROM table_17798548_4 WHERE season = "The Complete 4th Series"