1) The word "umbrella" contains three vowels: U, E, and A.

2) The largest known dinosaur, Argentinosaurus, weighed around 70-100 tons and measured up to 100 feet in length.

3) The word "forest" contains two vowels: O and E.

4) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.