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_10592536_8 (date_of_vacancy VARCHAR, team VARCHAR, replaced_by VARCHAR)
  ### Question:
  What is the date of vacancy when the team is manchester city and replaced by is mark hughes?
  ### Answer:
  SELECT date_of_vacancy FROM table_10592536_8 WHERE team = "Manchester City" AND replaced_by = "Mark Hughes"