Complex sentence: Twenty prison officers were injured during the escape, thirteen were kicked and beaten, four stabbed, two shot, and another, James Ferris, who had been stabbed, died after suffering a heart attack during the escape.
Split into simpler sentences: Twenty prison officers were injured during the escape, thirteen were kicked and beaten, four stabbed, and two shot. One prison warder, James Ferris, who had been stabbed, died after suffering a heart attack during the escape.