conversations.from: human
conversations.value: Tom has only been getting 6 hours of sleep a day.  He increases that by 1/3.  How many hours of sleep does he get per night?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: He increases his sleep by 6/3=2 hour per night
  So he now gets 6+2=8 hours of sleep per night