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: Do you want American, Indian or what type of food?
Example Output: Yes

Example Input: I'm thinking 5:15 pm.
Example Output: No

Example Input: No, I want it on the 12th of this month at 13:00.
Example Output:
No