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:
Thank you, that's perfect. Do they serve liquor?
answer:
Yes

question:
Please tell me what type of food you are looking for just say Mexican, Chinese or anything else. Also what city would you like me to search int.
answer:
Yes

question:
The movie is now playing. It's directed by Likarion Wainaina.
answer:
No