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

### Instruction:
Who is the Shirt Back Sponsor if the Shorts Sponsor is Telestet?

### Inputs:
table_name: table, columns: ['Period', 'Manufacturer', 'Shirt main sponsor', 'Shirt back sponsor', 'Shorts sponsor', 'Sleeves sponsor']

### Response:
SELECT Shirt back sponsor FROM table WHERE Shorts sponsor = telestet