input: Please answer the following: W: Yes, I just got here yesterday. And you? M: I'm a native. W: Oh, really? Everyone else I've met so far has been a tourist like us. I was beginning to think that there were no natives. M: Well. San Francisco has a lot of different ethnic groups so you might think you're seeing a lot of foreigners. But actually, the city has a population of about 700 000. W: What are the different ethnic groups? M: Web, after whites, the largest one is blacks. W: I thought it was Chinese. M: It's true that San Francisco has the largest Chinese community outside of Asia. But there are many more blacks here than Chinese. W: That's interesting. Don't most of the Chinese people live in China-town? M: Well, no, they live all over the city, but China-town is definitely the center of Chinese culture here. That's where you'll find the best Chinese restaurants, bookstores, art, theaters, things like that. W: What about the Japanese? Doesn't San Francisco have a large Japanese population too? M: No, actually there are only about 12 000 Japanese people here, but we do have an area called "Japan-town" that has Japanese restaurants and bookstores. W: You seem to know a lot about this city. M: Well, most San Franciscans think their city is pretty special. We like to talk about it. Besides, I teach ethnic history at the university here. W: No wonder you know so much! What was said before this conversation?
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output: M: So you're visiting San Francisco?
Please answer this: W: I'm looking for sports shoes for my son. M: Here are some shoes for boys. What was said before this conversation?
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Answer: M: What can do for you?
Problem: W: Well, I thought we should go traveling by ship for a change, so I booked two ship tickets instead. M: You should have told me or discussed it with me. W: I wanted to give you a surprise. Don't you like the idea? M: I like it all right, but it takes much more time to travel by ship than by plane. W: We have time, don't we? Every time we went on a trip, we were always tied down by schedules. This time will be different. We don't have to rush. M: You're right. This is our first trip since you retired. We can travel as long as we like. W: We'll have an easy trip and enjoy every minute. M: Have you bought traveler's cheques yet? W: Not yet. I'll go to the bank tomorrow. M: I'll go with you. What was said before this conversation?

A: M: Have you booked the airplane tickets to spain yet?
Problem: Given the question: W: Don't ask me. M: What do you mean? Did something go wrong? W: Susan thought I had said I would meet her at the Department Store at 2:30 when I really said 2 o'clock. Then she thought I had said the main entrance in the front when I really said the east entrance. M: Well, did you ever get together? W: Yes, but it's a wonder that we did. I had given up waiting and had gone inside to the women's clothing department. She had done the same thing. We met by accident. By that time it was 3 o'clock. M: Did you get what you wanted? I remember you said you wanted to get a sweater. W: No, a blouse. But by that time, the ones on sales were all gone. So I settled for a skirt. What was said before this conversation?
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The answer is:
M: Well, Betty, how was your shopping trip with Susan this afternoon?
input question: W: My mother drives a bus through our city. What was said before this conversation????
output answer: M: My mother is a teacher. She teaches English in our school. What about your mother, Ann?
input question: M: A quarter to eleven. What was said before this conversation????
output answer:
F: What time is it now?