Input text: The sky is cloudy. There is a big turtle. The small airplane is 5 feet above the turtle. The small green cactus is 13 feet left of the turtle. The second green cactus is 5 feet right of the turtle. The third green cactus is 18 feet in front of the second cactus. The fourth green cactus is 100 feet behind the green cactus. The tree is 40 feet behind the turtle.