answer: #Person2# is a tourist in San Francisco and #Person2# is a native. #Person1# tells #Person2# about the different ethnic groups in the city. #Person2# knew a lot about this city because #Person2# teaches ethnic history at the university.
documents: #Person1#: So you're visiting San Francisco?
  #Person2#: Yes, I just got here yesterday. And you?
  #Person1#: I'm a native.
  #Person2#: 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.
  #Person1#: 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.
  #Person2#: What are the different ethnic groups?
  #Person1#: Web, after whites, the largest one is blacks.
  #Person2#: I thought it was Chinese.
  #Person1#: It's true that San Francisco has the largest Chinese community outside of Asia. But there are many more blacks here than Chinese.
  #Person2#: That's interesting. Don't most of the Chinese people live in China-town?
  #Person1#: 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.
  #Person2#: What about the Japanese? Doesn't San Francisco have a large Japanese population too?
  #Person1#: 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.
  #Person2#: You seem to know a lot about this city.
  #Person1#: 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.
  #Person2#: No wonder you know so much!