Complex sentence: Paris' version of Space Mountain is the fastest of the five versions of the ride, the only one to include inversions, and also the only one to feature a portion of track outside the mountain itself (that being the station and the launch Cannon).
Split into simpler sentences: Paris' version of Space Mountain is the fastest of the five versions of the ride, and is the only Space Mountain to include inversions. It is also the only Space Mountain to feature a portion of track outside the mountain itself (that being the station and the launch cannon).