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_17327458_1 (manner_of_departure VARCHAR, date_of_vacancy VARCHAR)
### Question:
How many vacancies happened on 25 May?
### Answer:
SELECT COUNT(manner_of_departure) FROM table_17327458_1 WHERE date_of_vacancy = "25 May"