Original sentence: Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American aeronautical and systems engineer.Joseph Medical Center in Burbank after a physical deterioration and the advancement of senility, caused by the hardening of his arteries connecting to his brain
Edited sentence: Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American aeronautical and systems engineer, and probably the greatest of all time.Joseph Medical Center in Burbank, CA after a physical deterioration and the advancement of senility, caused by the hardening of his arteries connecting to his brain