instruction:
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.
question:
Do they serve alcohol? And what's their phone number?
answer:
Yes


question:
What type of movie do you like to watch ? whether you need subtitles?
answer:
Yes


question:
Please confirm the following information: The city is San Francisco. The reservation is at Khamsa restaurant at 6 PM today. The number of people in your party is 2.
answer:

No