1) The concept of augmented reality (AR) involves overlaying digital information and virtual objects onto the real world, enhancing the user's perception and interaction with the environment.

2) In Norse mythology, Ragnarok is a cataclysmic event that signifies the end of the world. It involves a series of apocalyptic battles and natural disasters, leading to the destruction of the gods and the world as it is known. From the ashes, a new world and a new generation of gods emerge.

3) The Paralympic Games, held immediately after the Olympic Games, showcase the athletic abilities of individuals with disabilities and promote inclusivity in sports.

4) Jennifer Lawrence is an American actress known for her roles in films such as "The Hunger Games" series, "Silver Linings Playbook," and "Joy." She has won an Academy Award and several Golden Globe Awards, establishing herself as one of the leading actresses of her generation.