You are given a sentence from a conversation between a human and a virtual assistant. Your task is to identify whether the sentence is a question or not. Answer with Yes or No.

Ex Input:
Great, the reservation is done.

Ex Output:
No


Ex Input:
What number can they be reached at?

Ex Output:
Yes


Ex Input:
Yeah that's perfect. Do they serve alcohol? Do they have live music?

Ex Output:
Yes