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's in the middle of the colosseum?" whose answer is amphitheatre.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what's in the middle of the colosseum
Useful Output:

Doc 1: See the plaque attached to the middle ring of the Colosseum directly facing the Temple of Venus. The plaque has the name of the structure
Doc 2: Nero had made his estate accessible to all, but the senators didn't like the access he was allowing for common people in the center of the city.
Doc 3: The Colosseum's arena floor was covered in a layer of sand that provided a firm foothold for the gladiators, and also absorbed all the blood, urine, faeces and
Doc 4: The arena floor (arena means “sand” in Latin) is where all the action took place. It was made of wood and covered with a layer of sand to absorb the blood.
Doc 5: The opening in the crown of the Statue of Liberty acts as a window or observation point, allowing natural light to enter the interior of the