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

### Instruction:
With a Season premiere of 23 july 2008 this show has what as the average episode?

### Inputs:
table_name: table, columns: ['Season', 'Episodes', 'Season premiere', 'Season finale', 'Peak Series rating[ citation needed ]', 'Average series rating', 'DVD release date', 'Discs']

### Response:
SELECT AVG Episodes FROM table WHERE Season premiere = 23 july 2008