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

### Instruction:
when was the next coach appointed after niger tornadoes fired their coach?

### Inputs:
table_name: table, columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Incoming manager', 'Date of appointment']

### Response:
SELECT Date of appointment FROM table WHERE Manner of departure = fired AND Team = Niger Tornadoes