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: What number can they be reached at?
Example Output: Yes

Example Input: What metropolis should I look in, and what types of food do you want?
Example Output: Yes

Example Input: your welcome. will there be anything else, I can assist with?
Example Output:
Yes