Problem: M: Yes, please. W: Thanks. M: Where are you going? W: I'm going to Washington D.C. And you? M: To New York. Is this your first trip here? W: Yes, I am a student from China. Would you please tell me something about Washington D.C.? M: With pleasure. Washington D.C. is the capital of America and it has many interesting places. W: But I am afraid I won't have enough time to see all those interesting places. M: It doesn't matter. You can take the tour mobile. It will take you to most tour sites in Washington D.C. W: That's great. Thank you for your information. What was said before this conversation?

A: W: Excuse me, may I sit here?
Problem: Given the question: M: Yes, my son and daughter bought this pen here for my wife's birthday, but it doesn't work, so I'd like to exchange it. W: Let me see. Was it dropped or anything? M: No, but you can see that the point is bent a little bit. W: Yes, it is, isn't it? We'd be happy to exchange it for you. But I'm afraid we don't have another purple one. We only have this pen in black and yellow now. M: My wife doesn't care for either of those colors. W: We have one with a red leather cover. That's three dollars more. M: The children worked hard to save up the eleven dollars for this one. They would probably be upset if I paid for part of their present. W: If you want, we can order another pen just like this one. M: That sounds like a good idea. Would you please go ahead and do that? W: We'd be very happy to. It will take a week or ten days. We'll call you when it comes in. M: Thank you very much. What was said before this conversation?
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The answer is:
W: Can I help you?
input question: W: I can't agree with you more. You see, countless innocent people are killed by drunk drivers each year. What was said before this conversation????
output answer: M: I think it's high time we turned our attention to the danger of drunk driving now.
W: Oh, I'm sorry. I've got to catch a bus. M: That's OK. What was said before this conversation?
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Answer: M: Excuse me. Do you have time to help take a picture of us?
Q: M: The regular-priced ones are here. Plus, we have some on sale over on that table. What was said before this conversation?
A: W: Excuse me, where can I find dictionaries?
[Q]: M: Oh, it's a good job, I think. W: So you are interested in working for Discoveries? M: That's right. write adventure articles, but I'm sure I could. I've written lots of articles for a newspaper. W: Oh? What newspaper have you written for? M: Well, so far I've sold articles to the chicago Star and a few other newspaper. W: Have you ever written an adventure article? M: No, but I have done some adventurous things to get information for my newspaper articles. W: Tell me about one of them. M: Well, I wanted to report on prisons, so I went to a store and stole something. Of course the police came, and I spent ten days in prison. It was horrible. When I got out, I wrote two articles about my experience there. When the police read the articles, they got upset and complained. Since then the prisons have really improved. W: That certainly is interesting. What was said before this conversation?
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[A]:
W: Discoveries is looking for a reporter to travel all over the world and write adventure articles.