1) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

2) The musical "The Phantom of the Opera" has been running in London's West End since 1986, making it the longest-running musical in history.

3) The word "orange" contains three vowels: O, A, and E.

4) The world's largest ocean, the Pacific Ocean, covers an area of approximately 63 million square miles.