conversations.from: human
conversations.value: I'm completely lost with this math problem: Teresa is 59 and her husband Morio is 71 years old. Their daughter, Michiko was born when Morio was 38.  How old was Teresa when she gave birth to Michiko?
  Can you give me a hand?
conversations.from: assistant
conversations.value: The difference in age between Teresa and Morio is 71 - 59 = 12 years.
  When their daughter is born, Teresa is 38 - 12 = 26 years old.