Complex sentence: In May, 2006, Michelle Wie, who has a sponsorship contract with Omega, accepted an invitation from the company to play in the 2006 tournament, making her first attempt to play on the European Tour.
Split into simpler sentences: In May, 2006, Michelle Wie, who has a sponsorship contract with Omega, accepted an invitation from the company to play in the 2006 tournament. It will be her first attempt to play on the European Tour.