answer: Mary asks Tom about the picnic yesterday and Tom shares with her his enjoyable picnic experience. Tom went to the National Park and had lunch near the river. He also took a walk and climbed a hill; then he had afternoon tea. Mary thinks it's lovely.
documents: #Person1#: Tom, I rang you yesterday, but you were out.
  #Person2#: I'm sorry, Mary. But I came home quite late yesterday about half past nine in the evening. Jim and Betty invited me to go for a picnic.
  #Person1#: Oh, how lovely, Tom! And did you like the picnic?
  #Person2#: Yes, I liked it very much.
  #Person1#: When did you leave, Tom?
  #Person2#: Jim and Betty came in their car about ten o'clock in the morning, and we left soon afterwards.
  #Person1#: And where did you go for the picnic?
  #Person2#: We went to National Park.
  #Person1#: Oh, it's lovely in National Park at this time of the year.
  #Person2#: Yes, and the sun shone all day.
  #Person1#: There's a river in National Park; did you have your lunch near the river?
  #Person2#: Yes, we had lunch near the river. Then, after lunch, we went for a walk along the river. Then we climbed up to the top of a hill, and looked at the beautiful view.
  #Person1#: What did you do then, Tom?
  #Person2#: Well, we went back to the car, and we drove to another part of National Park, and we had afternoon tea there. Then we started to drive home.
  #Person1#: Oh, you left early!
  #Person2#: Yes, Mary. But it took a long time to reach home because there was a lot of traffic on the road.
  #Person1#: Well, that was a lovely day's outing.
  #Person2#: Yes, I had a very good time.