What is Professor David Sable's background in the advertising industry?
Professor David Sable has previously held the position of Global CEO and Chairman of the acclaimed agency Y&R.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is Professor David Sable's background in the advertising industry?

### Input: Not applicable

### Response:
Professor David Sable has previously held the position of Global CEO and Chairman of the acclaimed agency Y&R.<|im_end|>