1) The Super Bowl is the championship game of the National Football League (NFL) in the United States and is one of the most-watched television events each year.

2) 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.

3) The tongue of a blue whale is so big that about 50 people could stand on it.

4) The word "flower" contains two vowels: O and E.