1) The FIFA Women's World Cup has been held since 1991 and showcases the best women's national soccer teams from around the globe.

2) The fall of the Berlin Wall in 1989 symbolized the end of the Cold War and the reunification of East and West Germany.

3) The phenomenon known as "black holes" occurs when matter is crushed into an infinitely small space, creating a gravitational pull so strong that nothing can escape.

4) The word "triangle" contains four vowels: I, A, E, and E.