Complex sentence: There were no fatalities in the immediate aftermath of the attack, but White House Press Secretary James Brady, who was left paralyzed from a gunshot wound, died in 2014 of causes a Virginia medical examiner found were directly related to the 1981 shooting.
Split into simpler sentences: There were no fatalities in the immediate aftermath of the attack. He would later die in 2014 of causes a Virginia medical examiner found were directly related to the 1981 shooting.