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: I wish to make a reservation at a restaurant in Pleasant Hill.

SOLUTION: No

PROBLEM: What is their physical address and do you know if they serve liquor?

SOLUTION: Yes

PROBLEM: What's their phone number and do they serve alcohol?

SOLUTION:
Yes