Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_40 (date_of_appointment VARCHAR, date_of_vacancy VARCHAR)
### Question:
What is the appointment day for 4 December 2008 vacancy?
### Answer:
SELECT date_of_appointment FROM table_name_40 WHERE date_of_vacancy = "4 december 2008"