CREATE TABLE table_name_14 (manner_of_departure VARCHAR, date_of_vacancy VARCHAR)

what is the manner of departure when the date of vacancy is 15 september 2008?
SELECT manner_of_departure FROM table_name_14 WHERE date_of_vacancy = "15 september 2008"
SELECT "manner_of_departure" FROM "table_name_14" WHERE "15 september 2008" = "date_of_vacancy"