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: Yea, that sounds great. Is Dana's expensive?

SOLUTION: Yes

PROBLEM: Oh and can you make it The Van's in Belmont?

SOLUTION: No

PROBLEM: I want a reservation at the Santa Rosa restaurant.

SOLUTION:
No