Someone mentioned a recipe; what about a song, legend, prophecy, or breed of plant or animal?
Would the evolution of a new breed of sheep count, so you'd follow each successive lamb rather than an immortal sheep?
If a song changes over time, then someone digs up the original, which version does the song see as the "true" version?
When a prophecy comes true, does it die? When humans think it has come true, does it feel the same way?