scene
{
    options
    {
        multisample 2
    }

    camera
    {
        position <1, -2, 1>
        look_at <0, 0, 0>
    }

    light
    {
        position <-1, -3, 4>
    }

    subtract
    {
        box
        {
            size <1, 1, 1>
            material { color <0.2, 0.2, 1> }
        }

        subtract
        {
            sphere
            {
                radius 0.4
                material { color <1, 0, 0> }
                translate <0, -0.5, 0>
            }
            box
            {
                size <1, 1, 0.2>
                material { color <0, 1, 0> }
                translate <0, -0.5, 0>
            }
        }
    }
}