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: "when was the dome of florence cathedral built?" whose answer is 1296.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the dome of florence cathedral built
Useful Output:

Doc 1: Florence Cathedral remained without a dome for more than a century, for nobody was capable of building it, until Filippo Brunelleschi
Doc 2: "It was built in 1296 based on an idea and design by Arnolfo Di Cambio, and developed thanks to the work of Giotto, Pisano, and Talenti,
Doc 3: His major work is the dome of the Cathedral of Santa Maria del Fiore (the Duomo) in Florence (1420–36), constructed with the aid of machines
Doc 4: The precision of the Santa Maria del Fiore cathedral's famous dome would be difficult to re-create today, even with modern laser levels, GPS positioning
Doc 5: Initially lacking technology for the dome, its construction started in 1420, leaving the dome's roof exposed for years before its remarkable finalization in