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_26998135_2 (date_of_appointment VARCHAR, date_of_vacancy VARCHAR)
### Question:
What is the date of appointment when the date of vacancy is 15 march 2011?
### Answer:
SELECT date_of_appointment FROM table_26998135_2 WHERE date_of_vacancy = "15 March 2011"