When rudolph kleberg (d) is the successor is the reason for vacancy?
CREATE TABLE table_2417445_4 (
    reason_for_vacancy VARCHAR,
    successor VARCHAR
)
SELECT reason_for_vacancy FROM table_2417445_4 WHERE successor = "Rudolph Kleberg (D)"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: When rudolph kleberg (d) is the successor is the reason for vacancy? ### Input: CREATE TABLE table_2417445_4 (
    reason_for_vacancy VARCHAR,
    successor VARCHAR
) ### Response: SELECT reason_for_vacancy FROM table_2417445_4 WHERE successor = "Rudolph Kleberg (D)"