Determine whether there has been any questions asked by the speaker in the dialogue or not. If there has been a question in the dialogue then the output Yes otherwise output No.

[Q]: I can't find my keys . Where did you See then last ?
[A]: Yes

[Q]: There are so many Chinese people in Vancouver . The Chinatown in Vancouver is the second largest Chinatown in the North America .
[A]: No

[Q]: Where do you want to go ? I'm going to the hospital . Get in . I'll take you . About how much will it cost ? It will cost you $ 10 . By the way , what's the time ? You can see the time on the meter . I have radio time , you know . It's a quarter to 12 . Could you please drive a little faster ? Certainly .
[A]:
Yes