Complex sentence: Dame Margot Fonteyn de Arias, DBE (18 May 191921 February 1991), was an English ballerina of the 20th Century and is widely regarded as one of the greatest classical ballet dancers of all time.
Split into simpler sentences: Dame Margot Fonteyn de Arias, DBE (18 May 191921 February 1991), was an English ballerina of the 20th Century. She is widely regarded as one of the greatest classical ballet dancers of all time.