When was the appointment date for the manager replaced by Lucien Favre?
CREATE TABLE table_name_68 (
    date_of_appointment VARCHAR,
    replaced_by VARCHAR
)
SELECT date_of_appointment FROM table_name_68 WHERE replaced_by = "lucien favre"
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: When was the appointment date for the manager replaced by Lucien Favre? ### Input: CREATE TABLE table_name_68 (
    date_of_appointment VARCHAR,
    replaced_by VARCHAR
) ### Response: SELECT date_of_appointment FROM table_name_68 WHERE replaced_by = "lucien favre"