The only cow in a small town in Poland stops giving milk, so the villagers buy one from Minsk for only 1,000 rubles.
Because the cow is so wonderful, they buy a bull to mate with the cow and produce more cows like it.
However, whenever the bull goes near the cow, the cow moves away.
The people are upset and decide to talk to the sage.
They tell him what's happening: "Whenever the bull approaches our cow, she moves away. If he approaches from behind, she moves forward."
The sage thinks about this for a minute and asks, "Did you buy this cow from Minsk?"
The people are dumbfounded. "Yes," they say. "How did you know?"
The sage answers sadly, "My wife is from Minsk."