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_name_5 (ceased_to_be_duchess VARCHAR, became_duchess VARCHAR)
  ### Question:
  When did the duchess who became duchess on 7/8 April 1766 cease to be duchess?
  ### Answer:
  SELECT ceased_to_be_duchess FROM table_name_5 WHERE became_duchess = "7/8 april 1766"