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_225099_3 (date_of_successors_formal_installation VARCHAR, successor VARCHAR)
  ### Question:
  How many entries are shown for date of successors formal installation where successor is john w. walker (dr)?
  ### Answer:
  SELECT COUNT(date_of_successors_formal_installation) FROM table_225099_3 WHERE successor = "John W. Walker (DR)"