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_2147588_4 (district VARCHAR, successor VARCHAR)
  ### Question:
  When william b. campbell (u) is the successor what is the district?
  ### Answer:
  SELECT district FROM table_2147588_4 WHERE successor = "William B. Campbell (U)"