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_225200_4 (successor VARCHAR, date_successor_seated VARCHAR)
  ### Question:
  Name the successor for not filled this congress
  ### Answer:
  SELECT successor FROM table_225200_4 WHERE date_successor_seated = "Not filled this congress"