conversations.from: human
conversations.value: In 5 years, Andy will be twice as old as Rahim is now. Rahim is 6 now. How much older is Andy than Rahim, right now, in years?
conversations.from: assistant
conversations.value: Andy will be 2*6=12.
  Now he is 12-5=7.
  So Andy is 7-6=1 year older than Rahim.