text: 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_11713303_2 (replaced_by VARCHAR, date_of_appointment VARCHAR, manner_of_departure VARCHAR)
  ### Question:
  How many have been replaced where the appointment date is 10 December 2007 and the manner of departure is quit?
  ### Answer:
  SELECT COUNT(replaced_by) FROM table_11713303_2 WHERE date_of_appointment = "10 December 2007" AND manner_of_departure = "Quit"