 Those who succeed will receive a sack of gold; those who fail will be turned into beasts.After a year, the prince heard the troll talking with another troll, saying he would ask how long they had been there (the twelve young men having been so busy partying that the troll was certain they did not know a year had passed), what shone on the roof (the lamp that the troll had stolen from the princess as she slept), and where their food came from (the king's table).When the troll asked these questions, the others did not know, but the prince answered all the questions correctly, so they all received their gold and left.