Complex sentence: Ernest Cadine (12 July 1893--28 May 1978) was a French weightlifter who won a gold medal at the 1920 Summer Olympics in Antwerp.
Split into simpler sentences: Ernest Cadine (July 12,1893--May 28,1978) was a French weightlifter and Olympic champion. He won a gold medal at the 1920 Summer Olympics in Antwerp.