1) The comedy group Monty Python, known for their surreal and irreverent humor, has had a significant influence on comedy and entertainment.

2) The Great Wall of China is not visible from space without aid, contrary to popular belief.

3) Priyanka Chopra Jonas is an Indian actress, singer, and film producer who has made significant contributions to both Bollywood and Hollywood. She gained international fame through her role in the television series "Quantico" and has since starred in successful films.

4) The term "bull market" refers to a period of rising stock prices, while a "bear market" refers to a period of falling stock prices.