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 is it for? Do you have a preferred restaurant?

Answer: Yes


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

Answer: Yes


Question: At what time would you like to go?

Answer:
Yes