Problem: Man: Yes. My daughter bought this camera here for my wife's birthday. But it doesn't work. So I'd like to change it for another one. Woman: I see. Let me have a look. Well, we'll be happy to change it for you. But I am afraid we don't have another pink one. Man: Oh? What will I do then? Woman: Would you like to choose a different color? We do have this camera in black and orange. Man: My wife doesn't like either of those colors. Woman: If you want, we can order another camera just like this one. There wouldn't be any extra charge for it. Man: That sounds fine. Would you please go ahead and do that? Woman: We'd be very happy to but it'll take at least a week. Maybe ten days. We'll call you when it comes in. Man: Thank you very much. Woman: You are welcome. What was said before this conversation?

A: Woman: Can I help you?
Problem: Given the question: W: You have a point. Air pollution is a problem. But not letting people drive on certain days is a bad idea. People have to go to work by car. M: I'm afraid I don't agree with you there. Reducing air pollution is really important. People are so used to driving that they don't think about ways to do things. If we stop them from driving on certain days, maybe they could think of new ways to get around. W: I see your point. But I still think it wouldn't be possible to stop people from driving. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: Air pollution is so bad in this city. I think the government should stop people from driving cars on certain days.
input question: W: Very well, sir. Your name and room number, please. What was said before this conversation????
output answer: M: I want to have this shirt washed and this suit dry-cleaned.
M: I used to be that way when I was her age. What was said before this conversation?
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Answer: W: Michelle is a little shy.
Q: M: No, they got here four days ago, and left yesterday. What was said before this conversation?
A: F: They came here the day before yesterday, didn't they?
[Q]: W: Have you heard that the professor gave us a week of extension on it? What was said before this conversation?
****
[A]:
M: I don't know if I will be able to turn in my economics paper on time.