Complex sentence: Kim's version of the story is marked by his unique stylistic mixing of genres, such as framing the story--which deals with an ancient tradition in which elders were abandoned to die--within a modern lecture on birth-control.
Split into simpler sentences: Kim's version of the story is marked by his mixing of genres. For example, he frames the story--which deals with an ancient tradition in which elders were abandoned to die--within a modern lecture on birth-control.