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: Please confirm this: The city is Hayward. The reservation is at 6:45 pm.
Example Output: No

Example Input: In which city should I search?
Example Output: Yes

Example Input: Sure. What kind of food are you hungry for?
Example Output:
Yes