conversations.from: human
conversations.value: 42 raspberries, blackberries, and blueberries were picked in total. If half of all the berries had been raspberries, and a third of the berries were blackberries, how many of them were blueberries?
  Solve it.
conversations.from: assistant
conversations.value: 42/2 = 21 raspberries had been picked.
  42/3 = 14 blackberries had been picked.
  21+14 = 35 raspberries and blackberries had been picked.
  42-35 = 7 blueberries had been picked.