You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What is the name of the book that was written by the author of Metamagical Themas?" whose answer is Gödel, Escher, Bach: An Eternal Golden Braid.
Each document should contain about 30 words, and these documents should contain useful information.

Query: books by Douglas Hofstadter
Useful Output:

Doc 1: 1 · Gödel, Escher, Bach: An Eternal Golden Braid. by Douglas Hofstadter ; 2 · The Magic Mirror of M. C. Escher. by Bruno Ernst ; 3 · Zen Flesh, Zen Bones: A
Doc 2: Writer of Gödel, Escher, Bach : An Eternal Golden Braid (Pulitzer Prize 1979). GENRE. Biography. RELEASED. 2018. 10 December. LANGUAGE.
Doc 3: I have been very intrigued by the descriptions of Hofstadter's books, specifically Godel, Escher, Bach; I am a Strange Loop; and Surfaces and
Doc 4: Gödel, Escher, Bach is a wonderful exploration of fascinating ideas at the heart of cognitive science: meaning, reduction, recursion, and much more. Best
Doc 5: He is best known for his book Gödel, Escher, Bach: An Eternal Golden Braid, first published in 1979. It won both the Pulitzer Prize for general non-fiction and