1) The word "guitar" contains three vowels: U, A, and I.

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

3) The ongoing Rohingya crisis in Myanmar has led to the displacement and persecution of the Rohingya people, drawing international attention and efforts to address the human rights violations and provide support to those affected.

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