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 Q]: Sure, which city?
[EX A]: Yes

[EX Q]: Nope, I'd like to have it in Cotati, and the diner is China Chef.
[EX A]: No

[EX Q]: Yes do they sere Alcohol
[EX A]:
Yes