answer: Jane is reading an article about the societies of the Ice Age and tells Tom people that time built shelters and used the sun for heating. Then Tom wants to read the passage.
documents: #Person1#: Hi, Jane. What's so interesting?
  #Person2#: What? Oh, hi, Tom. I am reading an article on the societies of the Ice Age.
  #Person1#: The Ice Age. There weren't many societies then, just a bunch of cave people.
  #Person2#: That's what people used to think. But a new exhibit at the American Museum on Natural History shows that the Ice Age people were surprisingly advanced.
  #Person1#: Oh, really? In what way?
  #Person2#: Well, the Ice Age people created language, art and music as we know it. And they didn't live in caves. They built their own shelters.
  #Person1#: What did they build them with? The odd weather would have killed most of the trees, so they couldn't have used wood.
  #Person2#: In some of the warmer places, they did build houses out of wood.
  #Person1#: How did they stay warm?
  #Person2#: Well, it says that in the early Ice Age, they often faced their homes toward the south to use the sun for heat.
  #Person1#: That is pretty smart. Can I read that magazine article when you have finished? I am really interested in it.