answer: #Person1# invites #Person2# to a picnic tomorrow. #Person2# hesitates because it might rain. #Person2# finally decides to go with #Person2#'s umbrella.
documents: #Person1#: We're having a picnic tomorrow. Why don't you come with us?
  #Person2#: I'd like to, but I think it's going to rain. The weatherman says so.
  #Person1#: I don't think he is right. It hasn't rained for a week and it isn't cloudy, either.
  #Person2#: But he is usually correct in his weather news.
  #Person1#: The temperature is 32t this afternoon. I'm sure we'll have fine weather for our picnic.
  #Person2#: Well, I'll go, but I'll take my umbrella with me.