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: Cetrella restaurant in Half Moon Bay. Book it for 1 o"clock in the afternoon.

SOLUTION: No

PROBLEM: Are you looking for any kind of cuisine? Chinese? Maybe American?

SOLUTION: Yes

PROBLEM: Yes, that works for me. What is their address? Do they serve alcohol?

SOLUTION:
Yes