Mr Black likes fish very much. He often buys some fish in the shop and takes them home for supper.
His wife, Mrs Black often asks her friends to their home to have lunch and eat fish.
One day, when Mr Black comes home in the evening, he cannot find his fish.
And Mrs Black says their cat has eaten the fish. Mr Black is very angry.
He takes the cat to the shop near their house to weigh the cat. He says, “You see, my fish is one kilo, and this cat is one kilo, too. My fish is here. Then where is my cat?”