conversations.from: human
conversations.value: Find the answer to the math problem: Charlie has three times as many Facebook friends as Dorothy. James has four times as many friends on Facebook as Dorothy. If Charlie has 12 friends on Facebook, how many Facebook friends does James have?
conversations.from: assistant
conversations.value: Dorothy has 12 / 3 = 4 Facebook friends.
  James has 4 * 4 = 16 Facebook friends.