answer: #Person2# tells #Person1# the man on the water buffalo is #Person2#'s grandfather who was a farmer. Then #Person2# talks about #Person2#'s grandfather's life experience and #Person2#'s grandfather is a senator now.
documents: #Person1#: Who is this on the water buffalo?
  #Person2#: That's my grand-father. He was a farmer. When he was young, he had to take the water buffalo to graze in the field.
  #Person1#: Oh yes, that was the best job in most farm families. That's where many of them learned to play the flute.
  #Person2#: My grandfather did that too. He used the time to study instead.
  #Person1#: That's interesting. Go on!
  #Person2#: My grand grandfather was a merchant who ran a small business. He couldn't afford to send my grand father to school.
  #Person1#: So he became a self-taught man?
  #Person2#: Right. Later he was a soldier and a fireman in the village. When he was middle aged, he became a great man, quite famous.
  #Person1#: In what field?
  #Person2#: As a leader of police officers in charge of the whole country.
  #Person1#: Is he still in that that type of work.
  #Person2#: No. He retired from that. He is a senator now.
  #Person1#: Would you want to be a senator?
  #Person2#: Well, maybe when I get old. But first I'll be a lawyer.