The first child in line gets a ball, the second child gets a rope, the third child gets a ball, and the fourth child gets rope, and so on.
(the fourth child; gets; rope) (the third child; gets; a ball) Context(the third child gets,List([67, 87))):(the second child; gets; a rope) Context(the second child gets the third child gets,List([37, 87))):(The first child in line; gets; a ball)
the third child gets,List([67, 87)) the second child gets the third child gets,List([37, 87))
the fourth child the third child the second child The first child in line
gets gets gets gets
rope
a ball
a rope
a ball