TASK DEFINITION: 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.
PROBLEM: What time please?

SOLUTION: Yes

PROBLEM: I want a reservation at Buon Appetito at 1:30 pm.

SOLUTION: No

PROBLEM: Does this restaurant happen to serve liquor? If so, what is their address?

SOLUTION:
Yes