1) The word "computer" contains three vowels: O, U, and E.

2) The development of the World Wide Web Consortium (W3C) and web standards has ensured interoperability and compatibility across different web browsers and devices.

3) The Boston Celtics and the Los Angeles Lakers are the most successful teams in NBA history, with a combined total of 33 championships.

4) The word "telephone" contains five vowels: E, E, O, E, and E.