Complex sentence: Manuel Alcalde Fornieles (December 31,1956--April 23,2004) was a male race walker from Spain, who represented his native country twice at the Olympic Games: 1984 and 1988.
Split into simpler sentences: Manuel Alcalde Fornieles (December 31,1956--April 23,2004) was a male race walker from Spain. He represented his native country twice at the Olympic Games: 1984 and 1988.