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: What time would you like for your reservation.

Answer: Yes


Question: Ok ,That's great. I need to know its director? who is he?

Answer: Yes


Question: Please confirm that you want to watch The Poseidon Adventure without subtitles.

Answer:
No