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

### Instruction:
When did svishtov , bulgaria disband?

### Inputs:
table_name: table, columns: ['Legion no. and title', 'Main legionary base', 'Emblem', 'Date founded/ founder', 'Date disband', 'Castra legionaria (legion bases) * = main base. Start date 31BC if unspecified', 'Notes']

### Response:
SELECT Date disband FROM table WHERE Main legionary base = Svishtov , Bulgaria