Complex sentence: Nearby, a lumberjack is cutting trees with a chainsaw when it rises off the ground and flies off also another man is riding and stops his motorcross bike, it flies into a magnetic energy vortex which expands.
Split into simpler sentences: Nearby, a lumberjack is cutting trees with a chainsaw when it rises off the ground and flies off. In another scene, a man is riding and stops his motorcross bike, but it flies into a magnetic energy vortex which expands.