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.

[Q]: Do they serve liquor? What is the address of the restaurant.
[A]: Yes


[Q]: My pleasure. Can I be of further assistance?
[A]: Yes


[Q]: I hear Hunan Impression has great food. I'd like to make a reservation for it.
[A]:
No