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

2) The word "country" contains three vowels: O, U, and Y.

3) Elvis Presley, often referred to as the "King of Rock and Roll," has sold over one billion records worldwide.

4) The President of the United States serves as the head of state and the head of government, responsible for leading the executive branch and representing the nation domestically and internationally.