Complex sentence: In the Upper West Side Reggie, a cellist and all-round genius who's bored and skeptical, lives a solitary life as his parents do not have time for him and relegate caretakers to watch after him.
Split into simpler sentences: In the Upper West Side lives Reggie, a cellist and all-round genius who's bored and skeptical. He lives a solitary life as his parents don't have time for him and relegates caretakers to watch after him.