Complex sentence: George Arthur Miller (December 6,1867--February 21,1935), 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: George Arthur Miller (December 6,1867--February 21,1935), 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.