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.

[EX Q]: Did anyone call ? Just Mr . White . What did he want ? He wouldn't say over the phone .
[EX A]: Yes

[EX Q]: Benter's Books . Yes , I need to order a large number of Webster's dictionaries . We have several hundred in stock . Is there a discount for buying in large quantity ?
[EX A]: Yes

[EX Q]: Do you have wool socks ? Yes . We have socks made of various materials . These socks are of imported wool . Can you guarantee the quality ? Yes , absolutely . Where are the panty-hose ? Here . We have black , white and transparent panty-hose here .
[EX A]:
Yes