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Einstein Riddle
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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 question is:
  Who owns the fish?

The tests are at http://josd.github.io/eye/reasoning/einstein/test
