Please answer the following question: Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: Where does Nuala hide the final crown piece? Movie plot title: Hellboy 2: The Golden Army Movie plot: During Christmas 1955, an 11-year-old Hellboy is told a bedtime story by his adoptive father, Trevor Bruttenholm, involving an ancient war between human and magical creatures, started by human's greed. After defeat of the magical creatures' forces, the master of the goblin blacksmiths offers to build an indestructible mechanical army for the elven King Balor. Encouraged by his son Prince Nuada, Balor orders the building of this Golden Army. The humans are devastated by the army. Balor is ridden with guilt and forms a truce with the humans: Man will keep his cities and the magical creatures will keep their forests. Nuada does not agree with the truce and leaves in exile. The magical crown controlling the army is broken into three pieces, one going to the humans and the other two kept by the elves. In the present, Nuada declares war on humanity. He collects the first piece of the crown from an auction, killing everyone at the site by unleashing tooth fairies, and kills his father for the second piece. His twin sister, Princess Nuala, escapes with the final piece. Meanwhile, Hellboy is having issues with his girlfriend Liz, and trouble accepting that their organization, the B.P.R.D. must remain undercover. Investigating the auction slaughter, Hellboy allows himself to be revealed to the world. In the commotion, Abe Sapien discovers Liz is pregnant; she swears him to secrecy as she ponders keeping the child. Furious at Hellboy's actions, the Bureau's superiors send a new B.P.R.D. agent, the ectoplasmic medium Johann Krauss, to take command. With Krauss in charge, the team tracks the tooth fairies to the troll market, an enormous city hidden under the Brooklyn Bridge. Abe stumbles onto Nuala, who has obtained a map leading to the Golden Army, and falls in love with her. She is brought under B.P.R.D. protection following an attack by Nuada's sidekick, the troll Wink, and an elemental forest god, both of which Hellboy kills. During the fight, Hellboy is questioned by Nuada whether it is right to fight for the humans...
Answer:
One of Abe's books