1) The game of baseball, often referred to as "America's pastime," is played between two teams of nine players and has a rich history dating back to the 18th century.

2) The word "elephant" contains three vowels: E, A, and E.

3) Serena Williams, an American tennis player, has won a total of 23 Grand Slam singles titles, making her one of the most successful players in the history of the sport.

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