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

### Instruction:
How many episode air dates are there for auditioning city Rio De Janeiro?

### Inputs:
table_name: table, columns: ['Episode Air Date', 'Audition City', 'Audition Date', 'Audition Venue', 'Guest Fourth Judge']

### Response:
SELECT COUNT Episode Air Date FROM table WHERE Audition City = Rio de Janeiro