Complex sentence: The first seven years of Roberto Jr. 's life were spent between Puerto Rico and Pittsburgh.Despite a warning not to fly on that day his father died in a plane crash on December 31,1972, while taking relief items to Nicaragua earthquake victims.
Split into simpler sentences: The first seven years of Roberto Jr. 's life were spent between Puerto Rico and Pittsburgh. His father died in a plane crash on December 31,1972, while taking relief items to Nicaragua earthquake victims.