Complex sentence: José Mouzinho d'Albuquerque (born December 27,1885, date of death unknown) was a Portuguese horse rider who competed in the 1924 Summer Olympics and in the 1928 Summer Olympics.
Split into simpler sentences: José Mouzinho d'Albuquerque (born December 27,1885, date of death unknown) was a Portuguese horse rider. He competed in the 1924 Summer Olympics and in the 1928 Summer Olympics.