Please answer this: W: One hundred and twenty yuan, but there is a 50% off in price.  What was said before this conversation?
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Answer: M: How much is the shirt?
Problem: M: Good afternoon. This is Mr. White at the Friendship Hotel. Is Mr. Black there?  W: No, he is out for lunch. Would you please call half an hour later?  What was said before this conversation?

A: W: Good afternoon. This is Mr. Black's office.
Problem: Given the question: W: I still remember the painting course had so many people in it that you couldn't really get any personal help.  M: Yes, but they have decided to limit the number this year, so if you want to do it you have to book a place. Anyway I wonder whether I ought to do computing really.  W: But would it be advanced enough for you?  M: I think so. The woman who runs it is supposed to be very good. She's not just a programmer. She's a well-trained teacher as well.  W: It's up to you of course. But at the end of a day's work, I just want something relaxing. And I'd have to pay for materials. I can't afford more than the minimum.  M: Then why don't you try Spanish? And it'd be really useful on holiday.  W: Don't the language courses last two terms?  M: I don't think so.  What was said before this conversation?
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The answer is:
M: Hi, Tracy. I went into the college today to find out about evening classes.
input question: W: Just sit down, and I'll get you a Coke and a sandwich, OK?  What was said before this conversation????
output answer: M: I feel so stressed out right now! Work has been crazy lately. I need to relax.
M: Yes. I just have to get the picture that I drew for her.  W: Great. Let's put it in this box, so it stays nice and flat.  M: I used the colored pencils that she got me for my birthday to make it, too! She will be happy about that.  W: Yes, she will. She loves your artwork! I wish I had time to bake a cake.  M: She would have liked that. You are the best baker, Mom.  What was said before this conversation?
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Answer: W: Are you ready to visit grandma in Springfield?
Q: W: You said it. We've never had so many factories before.  What was said before this conversation?
A:
M: I can't bare the air pollution in this city anymore. It is getting worse and worse.