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: "in the united kingdom who picks the prime minister?" whose answer is Monarch of the United Kingdom.
Each document should contain about 30 words, and these documents should contain useful information.

Query: how is the prime minister of the uk chosen
Useful Output:

Doc 1: How is the new Conservative leader selected? Under usual circumstances, British prime ministers are chosen in a general election held every five
Doc 2: The Monarch appoints a Prime Minister under the royal prerogative, although the process is a very private event.
Doc 3: Around 160000 people had the final say in choosing the leader of the Conservative Party, and therefore the next prime minister.
Doc 4: General elections take place in the UK, usually, once every five years. Voting takes place on one day, called polling day.
Doc 5: If an election produces a clear majority for one party, then the leader of that party becomes prime minister. If it is the incumbent prime