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]: Do they have alcohol?
[EX A]: Yes

[EX Q]: It's a restaurant called Yum Yum, and it's for six pm.
[EX A]: No

[EX Q]: Please confirm this: The city is Hayward. The reservation is at 6:45 pm.
[EX A]:
No