conversations.from: human
conversations.value: Joe played catch with Derek and Tammy. He caught the ball 23 times. Derek made four less than double the catches Joe did. Tammy caught the ball sixteen more than a third of the times Derek did. How many times did Tammy catch the ball?
conversations.from: assistant
conversations.value: Derek caught the ball 2 * 23 - 4 = 46 - 4 = 42 times.
  Tammy caught the ball 42 / 3 + 16 = 14 + 16 = 30 times.