conversations.from: human
conversations.value: At a restaurant, Juice Box A is 4 dollars. Juice Box B is 5 dollars more than Juice Box A. Juice Box C is 7 dollars more than Juice Box A. How much more is Juice box C than Juice Box B?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: Juice Box B is 4+5 = 9 dollars.
  Juice box C is 4+7 = 11 dollars.
  Juice box C is 11-9 = 2 dollars more than Juice box B.