1) The term "cloud computing" refers to the delivery of computing services, including storage, databases, and software, over the internet rather than on a local server.

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

3) The Mona Lisa, painted by Leonardo da Vinci, is one of the most famous and valuable artworks in the world.

4) The word "mountain" contains three vowels: O, U, and A.