conversations.from: human
conversations.value: Bobby wanted pancakes for breakfast.  The recipe on the box makes 21 pancakes.  While he ate 5 pancakes, his dog jumped up and was able to eat 7 before being caught.  How many pancakes does Bobby have left?
  Solve this problem.
conversations.from: assistant
conversations.value: Bobby ate 5 pancakes and his dog ate 7 so 5+7 = 12
  The recipe makes 21 pancakes and 12 were eaten so 21-12 = 9 pancakes were left