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 highest security prison in the uk?" whose answer is Her Majesty's Prison Wakefield.
Each document should contain about 30 words, and these documents should contain useful information.

Query: highest security prison in the uk
Useful Output:

Doc 1: Considered the toughest prison in the UK, Belmarsh is also notoriously known as "Hellmarsh" owing to the high number of physical and authority abuses reported
Doc 2: Being one of the UK's most secure prisons, it is often used to contain prisoners in cases where national security is threatened.
Doc 3: The award-winning HM Prison Berwyn facility in North Wales is the largest prison in the UK. The project included 13 workshops, an education block, and more.
Doc 4: These are high security prisons. They house male prisoners who, if they were to escape, pose the most threat to the public, the police or national security.
Doc 5: A rural prison is to increase its capacity by more than 50% to become "the UK's largest" jail, the Ministry of Justice (MoJ) has said.