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: Works for me. How pricey are they?

SOLUTION: Yes

PROBLEM: We want to eat at the Claw Shack in San Jose. Please make the reservation for 11:30 am.

SOLUTION: No

PROBLEM: Is it an inexpensive restaurant?

SOLUTION:
Yes