conversations.from: human
conversations.value: This math problem has got me stumped: A bag full of sugar weighs 16 kg. A bag full of salt weighs 30 kg. If you remove 4 kg from the combined weight of these two bags, how much do the bags now weigh?
  Can you show me the way?
conversations.from: assistant
conversations.value: The bags together weigh 16 + 30 = 46 kg.
  Removing the 4 kg, the bags will weigh 46 - 4 = 42 kg.