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_22297198_3 (replaced_by VARCHAR, date_of_vacancy VARCHAR)
### Question:
Who was the replacement manager for the vacancy of 12 Dec 2009?
### Answer:
SELECT replaced_by FROM table_22297198_3 WHERE date_of_vacancy = "12 Dec 2009"