Complex sentence: Charles Darley Miller (October 23,1868--December 22,1951) was a British polo player who competed in the 1908 Summer Olympics as a member of the British polo team "Roehampton", which won the gold medal.
Split into simpler sentences: Charles Darley Miller (October 23,1868--December 22,1951) was a British polo player who competed in the 1908 Summer Olympics. He was a member of the British polo team "Roehampton", which won the gold medal.