text: Nancy: Where should I buy the present? and what could it be?
  Melissa: We don't have time, just go to MIT Coop at Kendall Square and get a book
  Hilary: Melissa is right, and he will like it
  John: I saw there a nice book about time theories last week, try that
  Nancy: ok! thanks
target: As suggested by Melissa and Hilary, Nancy will buy a book for a gift in MIT Coop at Kendall Square. John recommends a book about time theories.