(text taken from a website)

The situation:
    There are 5 houses in five different colors.
    In each house lives a person with a different nationality.
    These five 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 Brit lives in the red house
    the Swede keeps dogs as pets
    the Dane drinks tea
    the green house is on the left of the white house
    the green house's owner drinks coffee
    the person who smokes Pall Mall rears birds
    the owner of the yellow house smokes Dunhill
    the man living in the center house drinks milk
    the Norwegian lives in the first house
    the man who smokes blends lives next to the one who keeps cats
    the man who keeps horses lives next to the man who smokes Dunhill
    the owner who smokes BlueMaster drinks beer
    the German smokes Prince
    the Norwegian lives next to the blue house
    the man who smokes blend has a neighbor who drinks water

The question is: Who owns the fish?

Einstein wrote this riddle this century. He said that 98% of the world could not solve it.