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:
Is there a preferred restaurant you are looking to make reservations at and what city will this be in?

Ex Output:
Yes


Ex Input:
Yes, that's good. How pricey are they? Do they have live music?

Ex Output:
Yes


Ex Input:
Shall I book a table for 1 at the El Rancho Restaurant in Concord at 7:45 pm today?

Ex Output:
No