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

### Instruction:
how many times did tunde abdulrahman leave the team?

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

### Response:
SELECT COUNT Date of vacancy FROM table WHERE Outgoing manager = Tunde Abdulrahman