input: Please answer the following: W: You were talking about your trip to South Africa. I bet you had a great time. M: Yes, we did. In fact, you know what we encountered. W: A long-last friend? M: Come on! A lion. What was said before this conversation?
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output: M: Let's back up. Where was I?
Please answer this: M: Well...it starts at six thirty, and will lasts three hours. What was said before this conversation?
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Answer: F: When will the concert finish?
Problem: W: A person has to write the code, test it to make sure it spreads properly and then release the virus. A person also designs the virus's attack phase, whether it is a silly message or destruction of a hard disk. M: So why do people do it? W: There are at least three reasons. The first is the same psychology that drives people to set fire with intention. The second reason has to do with the passion of watching things blow up. Many people have a fascination with things like explosions and car crashes. The third reason probably involves showing off rights. What was said before this conversation?

A: M: What do people do when they create viruses?
Problem: Given the question: M: Yeah. The hours were convenient, but had he accepted it, he wouldn't have been able to make ends meet. What was said before this conversation?
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The answer is:
W: Do you know that Sam turned down that job offer by a travel agency?
input question: M: No, it's not her birthday. We'll just bring a bottle of wine. What was said before this conversation????
output answer: W: Do you think we should bring a present to Mary's party?
input question: W: Not really...I'm sorry our holiday is over. We had a great time, didn't we? M: Mmm...it was OK. The weather wasn't as good as I'd hoped. It started to get cloudy in the last two days. I remember the forecast was for bright sunshine the whole week! W: Well,most of the week was like that. We only had a little rain,right? M: Yeah...The food in the hotel was delicious,but it was priced too high. Next time,we should stay at a cheap hotel. W: Yeah,but the waiters were very helpful,I must say. When I asked for black tea,they sent some up to our room in a while. M: Mmm...that's true. W: But I don't know why the air conditioner didn't work. It was so hot! M: It didn't help when we opened the windows,either. It didn't cool the room down at all. W: Well,that was the only thing that didn't work properly. M: Right,well,it happens sometimes. W: So...what should we do for our next holiday then? We can go somewhere else - Asia or Europe? M: Well,I would rather we go to Africa again. What was said before this conversation????
output answer:
M: Phew! Home at last! I'm glad to be back, aren't you?