This example, titled "Fork of Rising-Setting Sun," is a fully self-contained SVG animation that depicts a dynamic landscape with a sun, rolling hills, a river, trees, ducks, birds, and an airplane, all set against a sky that cycles through colors. The scene's gradients, including the sky and land, animate their color stops over a 15-second loop, while the sun, ducks, birds, and airplane follow predefined motion paths using SVG's `<animateMotion>` and `<mpath>` elements. The artwork is built entirely with basic SVG shapes and paths, with no external JavaScript libraries, and is rendered directly in the browser via inline SVG markup, as shown in the provided `index.html` file.