Premise: And with these words she vanished by the window through which she came , while the fairies comforted the weeping queen and took counsel how best the princess might be kept safe during her childhood .<br>At the end of half an hour they had made up their minds what to do , and at the command of the fairies , a beautiful palace sprang up , close to that of the king and queen , but different from every palace in the world in having no windows , and only a door right under the earth .
Hypothesis: The palace is meant to keep the princess safe.