1) The word "piano" contains three vowels: I, A, and O.

2) The insurance industry is one of the oldest industries in the world, with roots dating back thousands of years.

3) The sunflower is not a single flower but a cluster of small flowers arranged in a spiral pattern.

4) Mount Everest, located in the Himalayas, is the highest mountain on Earth, reaching a peak elevation of 29,032 feet (8,848 meters).