1) The Olympic Games, originating in ancient Greece, were revived in 1896 and are now held every four years, bringing together athletes from around the world.

2) The concept of reinsurance, which is insurance for insurance companies, originated in the 17th century.

3) The intensity of cyclones is often measured using the Saffir-Simpson Hurricane Wind Scale, which categorizes them based on their sustained wind speeds.

4) The word "umbrella" contains three vowels: U, E, and A.