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: Thank you, that's perfect. Do they serve liquor?

SOLUTION: Yes

PROBLEM: There's a movie called Family. I want to watch that.

SOLUTION: No

PROBLEM: Thanks for finding that movie for us. That is all the assistance I need for now.

SOLUTION:
No