TASK DEFINITION: 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.
PROBLEM: How much is this ? You mean the large one or the small one ? The large one . They're on special this week . They've been reduced to five dollars . Is this the only kind you have ? No . We have some that are different in style but not in color . They're over there . Do you see the sign ? Oh , yes . I think I'll look at those over there before I decide . Very well . Just take your time .

SOLUTION: Yes

PROBLEM: Have you got any better ? That's the best there is . Okay , I'll take one . That'll be $ 200 , sir .

SOLUTION: Yes

PROBLEM: 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 ?

SOLUTION:
Yes