answer: #Person1# introduces a story of breakdance to #Person2# when they are dancing. #Person1# also makes a comparison between disco and breakdancing.
documents: #Person1#: May I invite you for a dance?
  #Person2#: With pleasure.
  #Person1#: You dance well. Do you breakdance?
  #Person2#: Me, what brought that on?
  #Person1#: There's a story about breakdancing in the paper.
  #Person2#: What does it say?
  #Person1#: According to the story, it's some sort of modern dance style.
  #Person2#: Like disco?
  #Person1#: Well, breakdancing is more a physical exercise than a dance.
  #Person2#: And disco a kind of nightclub.
  #Person1#: Right, a disco is a place where people dance according to nonstop recorded music. . .
  #Person2#: So. . . disco is what the music is called and a disco is a place where people go to dance to it. And breakdancing is a different sort of thing altogether.
  #Person1#: You are witty.