Why did Robert L. Bacon (r) vacate?
CREATE TABLE table_24503 (
    "District" text,
    "Vacator" text,
    "Reason for change" text,
    "Successor" text,
    "Date successor seated" text
)
SELECT "Reason for change" FROM table_24503 WHERE "Vacator" = 'Robert L. Bacon (R)'
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: Why did Robert L. Bacon (r) vacate? ### Input: CREATE TABLE table_24503 (
    "District" text,
    "Vacator" text,
    "Reason for change" text,
    "Successor" text,
    "Date successor seated" text
) ### Response: SELECT "Reason for change" FROM table_24503 WHERE "Vacator" = 'Robert L. Bacon (R)'