Solve "who owns the fish" with Alloy

Use an Alloy model to solve the logic problem: Who owns the fish?

There are five houses in five different colours starting from left to right. In each house lives a person of a different nationality. These owners all drink a certain type of beverage, smoke a certain brand of cigarette and keep a certain type of pet. No two owners have the same pet, smoke the same brand or drink the same beverage. The question is: WHO OWNS THE FISH???

The constraints are:

1. The Brit lives in the red house
2. The Swede keeps dogs as pets
3. The Dane drinks tea
4. The green house is on the left of the white house
5. The green house's owner drinks coffee
6. The person who smokes Pall Mall rears birds
7. The owner of the yellow house smokes Dunhill
8. The man living in the centre house drinks milk
9. The Norwegian lives in the first house
10. The person who smokes Marlboro lives next to the one who keeps cats
11. The person who keeps horses lives next to the person who smokes Dunhill
12. The person who smokes Winfield drinks beer
13. The German smokes Rothmans
14. The Norwegian lives next to the blue house
15. The person who smokes Marlboro has a neigbor who drinks water