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 would like to watch visitor

Ex Output:
No


Ex Input:
Yes that works for me. Do you know if they serve liquor? Also, can i get the contact number please?

Ex Output:
Yes


Ex Input:
Thank you, that's all I needed.

Ex Output:
No