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: "How many copies of the books by the author of The Leopard have sold worldwide?" whose answer is 30 million.
Each document should contain about 30 words, and these documents should contain useful information.

Query: author of The Leopard
Useful Output:

Doc 1: About the Author. GIUSEPPE DI LAMPEDUSA was born in Sicily in 1896 and died in 1957. The Leopard was his only novel. Read an Excerpt. Read an Excerpt
Doc 2: A solitary, melancholic man, author Tomasi di Lampedusa was deeply aware of his own mortality. The Leopard was his only novel that, together
Doc 3: The Leopard by Giuseppe Tomasi di Lampedusa has finally been adapted into a Netflix series — if you haven't read the classic novel,
Doc 4: The Leopard, by Tomasi di Lampedusa (Original title: Il Gattopardo; publisher: Pantheon; Vintage reprint edition Nov. 6, 2007; paperback, 336 pages).
Doc 5: Gloria Sully (Spice) and Kerry Sully (Magellan) visit the home of Giuseppe di Lampedusa, author of one of the best novels of all time.