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_2417445_4 (date_of_successors_taking_office VARCHAR, successor VARCHAR)
### Question:
When rudolph kleberg (d) is the successor what is the date of successors taking office?
### Answer:
SELECT date_of_successors_taking_office FROM table_2417445_4 WHERE successor = "Rudolph Kleberg (D)"