answer: Phil tells #Person1# about an accident when mountain climbing in New Hampshire in 1982. Phil got lost and lost his legs, so Phil managed to build powerful new legs.
documents: #Person1#: Hi. Phil. can you tell me how it happened?
  #Person2#: Sure: I was mountain climbing in New Hampshire in 1982. Suddenly the weather became really bad. There was a lot of snow and we couldn't see anything. We got lost. Well, we spent four days on the mountain. The temperature was -20C. We didn't have any equipment or food.
  #Person1#: So what happened? I guess someone found you, right?
  #Person2#: Yes. but we were very sick. I couldn't move my legs because of the cold. months in the hospital. The doctors removed my legs.
  #Person1#: Right. So you lost your legs, but you want to try your best to stay active.
  #Person2#: That's right. In fact, I decided to make some new legs for myself. I realize that no one has to be physically disabled; We can use modern technology to help us.
  #Person1#: And you built these great new legs. Can you go mountain climbing again?
  #Person2#: Yes, I can. In fact, these are better than climbing shoes, The spring de- sign means they are much more, powerful.