first(
        images = [ "falling_object_256x256.en.png", "falling_object_512x512.en.png" ],
        number = 3,
	A = "A. Like a parabola.",
	B = "B. In a straight line.",
	C = "C. Like a circle.",
	A_goto = "success",
	B_goto = "wrong",
	C_goto = "circle"
    ).
circle(
       images = [ "falling_object_not_circle_256x256.en.png",
                  "falling_object_not_circle_512x512.en.png" ],
       number = 1,
       A = "Go back to the previous room.",
       A_goto = "failure"
    ).

wrong(
        images = [ "wrong_256x256.en.png" ],
        number = 1,
	A = "Go back to the previous room",
	A_goto = "failure"
    ).
