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 biggest police force in the uk?" whose answer is Metropolitan Police Service.
Each document should contain about 30 words, and these documents should contain useful information.

Query: largest police force in the uk
Useful Output:

Doc 1: The RTPC is currently the largest police command in the UK; made up of over  The BTP is the national police force for the railways in the UK. It is
Doc 2: This is a list of the 45 territorial police forces and 3 special police forces of the United Kingdom. It does not include non-police law enforcement agencies.
Doc 3: The Met is the largest police force in Europe. It delivers policing services to 9 million Londoners across 620 square miles, 32 boroughs and 678 wards.
Doc 4: This report compares the number of officers per in London to rates in the three other largest police-force areas in England and Wales. (Greater Manchester, West
Doc 5: The Metropolitan Police, the UK's largest police force, was placed under special measures this week after a series of failures. The watchdog