Complex sentence: He owned 1 helicopter, 1 Lear jets for his personal use and the air line was later expanded with many planes and was on the top of the 10 wealthiest people in the world at the time.
Split into simpler sentences: He owned 1 helicopter, 1 Lear jet for his personal use and the air line was later expanded with many planes. Upali was among the top 10 wealthiest people in the world at the time.