conversations.from: human
conversations.value: James has 6 more candies than Robert. John has twice as many candies as Robert. If John has 54 candies, how many more candies does John have than James?
  What is the solution?
conversations.from: assistant
conversations.value: Robert has 54/2 = 27 candies.
  James has 27+6 = 33 candies.
  John has 54-33= 21 more candies than James.