Complex sentence: Alfred Carlton Gilbert (b. February 13,1884 in Salem, Oregon--d. January 24,1961 in Boston, Massachusetts) was an American inventor, athlete, toy-maker and businessman, best known as the inventor of the Erector Set.
Split into simpler sentences: Alfred Carlton Gilbert (February 13,1884--January 24,1961) was an American inventor, athlete, toy-maker and businessman. Born in Salem, Oregon and died in Boston, Massachusetts, Gilbert is best known as the inventor of the Erector Set.