1) The most-watched television event in the United States is the Super Bowl, with millions of viewers tuning in each year.

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

3) The sitcom "Friends" is known for its iconic Central Perk coffee shop, where the main characters often gather.

4) The book series "The Chronicles of Narnia" by C.S. Lewis has sold over 100 million copies worldwide.