Please answer this: W: OK. I have to go and buy some pet foods.  What was said before this conversation?
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Answer: M: Maria. Let's put aside the topic for later. My boss will blame me for being late.
Problem: M: Yeah, we say it the United Nations.  W: How fascinating! It can meet people from all over the world.  M: Yeah, but just one problem. I'll have to leave my friends behind.  What was said before this conversation?

A: W: They say you've got a job in the New York City.
Problem: Given the question: W: Only half an hour. But if in rush hour, it will take me 50 minutes.  What was said before this conversation?
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The answer is:
M: How long does it take you home by bus?
input question: W: Well, that's a difficult question, but I can think of a few. People here dress quite differently, because the weather is warmer here. We wear winter clothes half the year-thick trousers and warm sweaters. Here, people dress more fashionably. Everyone looks very well dressed.  M: Is clothing expensive in your country?  W: Yes, it's more expensive than here.  M: Do you find it easy to talk to people here? Can you make friends easily?  W: Oh, yes. It's easy to meet people here, even if we speak different languages. People are the same everywhere. They worry about the same things. They worry about the cost of living and about the future of their children.  M: Yes, you are dead right.  What was said before this conversation????
output answer: M: Have you noticed a lot of differences between your country and ours?
Diane: Uh, hi. It's David, right?  Doug: No, Doug. Remember? We met at Gary's party last Friday night.  Diane: Oh, yeah. Now I remember. You were standing all alone ... uh, oh, I ... I mean ... I mean, you ... you know. We started talking about school and stuff. [Yeah, yeah.]. Uh, how did you know I lived here?  Doug: Well, I just live around the corner, and I asked Gary if he knew how I could contact you, and ...  Diane: And?  Doug: Well, I was just wondering if you'd like to go out this Thursday night. [Oh.]. Well, there's this real great movie playing downtown at the theater, [Uh ...] and I thought ... Well ... well, we can't use my car 'cause I was in an accident with this wild man driving this BMW, so I've already checked the bus schedule, and ...  Diane: Uh-hem [Well], Well, David [No Doug! Remember?] Oh yeah. Doug. I'm sorry, but I have to work that evening.  Doug: Oh really? Well, I thought you said before that you quit your job.  Diane: Well, I did, but I found a new one.  Doug: Uh, well, how about this Friday night? We could have dinner and then see that movie.  Diane: A movie? How boring!  Doug: Well, well, uh, well. A movie? Yeah, for ... forget a movie.  Diane: Anyway, I'm afraid I have to cook dinner for my family, and ...  Doug: Hey, I love to cook. We could whip something up together! I mean, it would be great!  Diane: I don't think that's a good idea. It's just a family occasion and ...  Doug: Well, hey, are you free this Saturday night? I have two tickets to the football game, and I thought ...  Diane: Sure. I'd love to go. [Okay!] I've wanted to see a game all year. [Yeah!] My roommate will be so surprised when she finds out I have a ticket for her, and ...  Doug: Well, but ...  Diane: Oh [car screeching ... ] ... and here's my brother! He's a defensive lineman on the team.  Doug: Well, he doesn't look too happy.  Diane: Ah, he's a teddy bear, but hasn't been the same since someone ran into his BMW.  Doug: Oh. Let me guess. Red, right?  Diane: Right. [Oh] And, it's just that he's a little...  What was said before this conversation?
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Answer: Doug: Uh, hi there Diane. Nah, okay. Uh ... Hi, what's up, Di? Okay, here we go... [doorbell ringing ]
Q: Mum: I'm getting something ready for tomorrow. Tomorrow is Tre e-planting Day.  Li Ming: Tree-planting Day? What do people do on this day, Mum?  Mum: Many, many people will go and plant trees.  Li Ming: Why do they do tha t?  Mum: To make the earth more beautiful. And to make our life better.  Li Ming: But I often see people on TV cut down many big trees. Why do they do that, Mum?  Mum: Hm, to make paper, houses, and to make our life better.  Li Ming: To make our life better, too? I just don't understand. Mum, why do many people go and plant trees on the same day?  Mum: Oh, my dear son. It's hard to explain to you. When you grow up, you will understand. Just remember trees are very important to us.  What was said before this conversation?
A:
Li Ming: What are you doing, Mum?