Complex sentence: The 2006-2007 Cross Country Skiing World Cup season began on October 28,2006 with 800m sprint races for women in Düsseldorf which was eventually won by Marit Bjørgen of Norway.
Split into simpler sentences: The 2006-2007 Cross Country Skiing World Cup is a multi race tournament over a season for cross-country skiers. The season began on October 28,2006 with 800m sprint races for women in Düsseldorf which was eventually won by Marit Bjørgen of Norway.