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.

Example Input: Indeed, that all sounds good.
Example Output: No

Example Input: Ok ,That's great. I need to know its director? who is he?
Example Output: Yes

Example Input: Yeah, that's correct. Are the prices costly there?
Example Output:
Yes