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_25572068_1 (date VARCHAR, series VARCHAR)
  ### Question:
  When was the F4 7 series?
  ### Answer:
  SELECT date FROM table_25572068_1 WHERE series = "F4 7"