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:
What number can they be reached at?

Ex Output:
Yes


Ex Input:
Yes, that's correct. Do they have live music, by the way?

Ex Output:
Yes


Ex Input:
the restaurant is la traviata.i want it in san fran.make it at 6:30 pm

Ex Output:

No