Complex sentence: Marcus Rafael Nikkanen (January 26,1904--March 28,1985) was a Finnish figure skater who competed in the 1928 Winter Olympics, in the 1932 Winter Olympics, and in the 1936 Winter Olympics.
Split into simpler sentences: Marcus Rafael Nikkanen (January 26,1904--March 28,1985) was a Finnish figure skater. He represented Finland at the 1928 Winter Olympics, at the 1932 Winter Olympics, and the 1936 Winter Olympics.