1) Mount Kilimanjaro in Tanzania is the highest mountain in Africa and attracts climbers from around the world.

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

3) The word "oxygen" contains two vowels: O and E.

4) The concept of virtual reality (VR) involves creating a simulated environment that can be explored and interacted with using specialized headsets and input devices.