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.

[EX Q]: What kind of food do you want? Examples include Chinese and Italian.
[EX A]: Yes

[EX Q]: That works for me. What type of food and liquor do they serve?
[EX A]: Yes

[EX Q]: I could not make the reservation. They serve California style food. They don't serve liquor. Wence's restaurant is very nice, should I try a reservation for 2 people today at 11:30 am?
[EX A]:
No