Complex sentence: "Billie Jean" remained atop the "Billboard" Hot 100 for seven weeks, before being toppled by "Come On Eileen", which stayed at No.1 for a single week, before Jackson reclaimed the position with "Beat It".
Split into simpler sentences: Billie Jean remained atop the "Billboard"Hot 100 for seven weeks, before being toppled by "Come On Eileen". The Dexys Midnight Runners' song stayed at No.1 for a single week, before Jackson reclaimed the position with "Beat It".