conversations.from: human
conversations.value: Find the answer to the math problem: The tallest of 3 trees is 108 feet.  The middle sized tree is 6 feet less than half the height of the tallest tree. The smallest tree is 1/4 the height of the middle tree.  How tall is the smallest tree?
conversations.from: assistant
conversations.value: Tallest Tree: 108 feet
  Middle sized tree:(108/2)-6=48 feet
  Smallest tree:48/4=12 feet