Read the excerpt from The Fellowship of the Ring. Twelve more years passed. Each year the Bagginses had given very lively combined birthday-parties at Bag End; but now it was understood that something quite exceptional was being planned for that autumn. Bilbo was going to be eleventy-one , 111, a rather curious number, and a very respectable age for a hobbit (the Old Took himself had only reached 130); and Frodo was going to be thirty-three , 33, an important number: the date of his "coming of age”. . . Which detail in the excerpt identifies it as fantasy?