conversations.from: human
conversations.value: Jacob is 24 years now. His brother Tony is half Jacob's age. In 6 years how old will tony be?
  Can you solve this problem?
conversations.from: assistant
conversations.value: Tony’s age now is 24 / 2 = 12 years old.
  In 6 years he will be 12 + 6 = 18 years old.