Complex sentence: Otto Aasen (born January 1,1894, date of death unknown) was a Norwegian nordic skier who won the nordic combined at the Holmenkollen ski festival in 1917 and 1918.
Split into simpler sentences: Otto Aasen (born January 1 1894, date of death unknown) was a Norwegian nordic skier. He won the nordic combined at the Holmenkollen ski festival in 1917 and 1918.