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

2) The increasing emphasis on mental health and well-being has led to greater awareness, advocacy, and destigmatization of mental health issues, as well as efforts to improve access to mental health services and support systems.

3) The Cuban Missile Crisis in 1962 brought the United States and the Soviet Union to the brink of nuclear war during the Cold War.

4) The sport of golf originated in Scotland and is played on courses with 18 holes, each with a designated par score.