Einstein wrote this riddle early during the 19th century. He said 98% of the world could not solve it.
“There are 5 houses in 5 different colors. In each house lives a person with a different nationality. The 5 owners drink a certain type of beverage, smoke a certain brand of cigar, and keep a certain pet. No owners have the same pet, smoke the same brand of cigar, or drink the same beverage.”
The question is: Who owns the fish?