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: Nah, that will do for now.

SOLUTION: No

PROBLEM: Let's make it an evening 7:30 reservation and you should look in San Francisco.

SOLUTION: No

PROBLEM: I would like to start the movie now.

SOLUTION:
No