answer: #Person2# thinks underground is fast, comfortable and it's the best. Buses are slow in rush hours even though #Person2# enjoys them for short journeys. Taxis are too expensive.
documents: #Person1#: Have you traveled much in Britain?
  #Person2#: No, not much. But I travel quite a lot in London every day.
  #Person1#: What do you think of the London traffic?
  #Person2#: I think the London underground is OK because it's fast and comfortable, but I also like your London buses, especially for short journeys.
  #Person1#: But don't you think the buses are rather slow?
  #Person2#: Yes, I do, particularly in rush hour.
  #Person1#: What about London taxis?
  #Person2#: Taxis often get caught in traffic jams,and besides, fared too expensive.
  #Person1#: Well, what do you think is the best way to travel in London?
  #Person2#: Ah, the London underground I think.