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_2159547_3 (reason_for_change VARCHAR, vacator VARCHAR)
### Question:
Why did Robert L. Bacon (r) vacate?
### Answer:
SELECT reason_for_change FROM table_2159547_3 WHERE vacator = "Robert L. Bacon (R)"