Complex sentence: At New York Hospital in Manhattan, another operation was performed on Sawchuk's bleeding liver, but he never recovered and died shortly thereafter from a pulmonary embolism on May 31,1970 at age forty.
Split into simpler sentences: At New York Hospital in Manhattan, another operation was performed on Sawchuk's bleeding liver. He never recovered and died shortly thereafter from a pulmonary embolism on May 31,1970 at age forty.