Complex sentence: That left the farmer upon whose property the balls fell as the lucky owner.The balls were thoroughly analysed by New Zealand scientists which determined that they were Soviet in origin because of manufacturing marks and the high-tech welding of the titanium.
Split into simpler sentences: That left the farmer upon whose property the spheres fell as the lucky owner. The spheres were thoroughly analysed by New Zealand scientists which determined that they were Soviet in origin because of manufacturing marks and the high-tech welding of the titanium.