conversations.from: human
conversations.value: Evan owns 40 fewer books than the number he had 2 years ago. Evan will have 60 more than five times as many books as he owns now in five years. If Evan had 200 books two years ago, calculate the total number of books he will have in five years.
conversations.from: assistant
conversations.value: If Evan had 200 books two years ago, he currently has 200-40 = 160 books.
  In five years, Evan will have 60 more than 160*5 = 800 books which is the number he has now.
  This means Evan will have 800+60 = 860 books in five years.