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:
I can help you with that. What kind of food are you interested in?

Ex Output:
Yes


Ex Input:
Yea, that sounds great. Is Dana's expensive?

Ex Output:
Yes


Ex Input:
I need a restaurant reservation.

Ex Output:

No