conversations.from: human
conversations.value: The rug is 5 feet wider than the chair. The couch is 2 feet longer than twice the width of the rug. If the chair is 3 feet wide. How many feet long is the couch?
  What is the solution?
conversations.from: assistant
conversations.value: Chair = 3 feet
  Rug = 3 + 5 = 8 feet
  Couch = 2 * 8 + 2 = 18 feet
  The couch is 18 feet long.