Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Why did Robert L. Bacon (r) vacate?

### Inputs:
table_name: table, columns: ['District', 'Vacator', 'Reason for change', 'Successor', 'Date successor seated']

### Response:
SELECT Reason for change FROM table WHERE Vacator = Robert L. Bacon (R)