conversations.from: human
conversations.value: There are three trees in Eddy's backyard. The shortest tree has a height of 6 feet, and the second tree has a height of 5 feet more than the shortest tree. The height of the tallest tree is twice the height of the two trees combined. How tall is the tallest tree?
  Can you solve this problem?
conversations.from: assistant
conversations.value: The height of the second tree is 6 + 5 = 11 feet.
  Thus, the combined height of the two trees is 6 + 11 = 17 feet.
  Therefore the height of the tallest tree is 2 x 17 = 34 feet.