1) The first modern Olympic marathon race was held at the 1896 Olympics in Athens and has since become one of the most iconic and challenging events in athletics.

2) 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.

3) The comedy group Monty Python, known for their surreal and irreverent humor, has had a significant influence on comedy and entertainment.

4) Cows have best friends and can become stressed if they are separated.