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_11207040_6 (date_of_vacancy VARCHAR, replaced_by VARCHAR)
  ### Question:
  What days are vacant that were replaced by john brown?
  ### Answer:
  SELECT date_of_vacancy FROM table_11207040_6 WHERE replaced_by = "John Brown"