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: "where is the world cup 2018 stadium in russia?" whose answer is Moscow.
Each document should contain about 30 words, and these documents should contain useful information.

Query: 2018 World Cup stadiums in Russia
Useful Output:

Doc 1: Luzhniki Stadium will host seven games at the 2018 FIFA World Cup, including both a semi-final and the final match. After the stadium was
Doc 2: FIFA 2018 Stadium: Luzhniki Stadium, Moscow. Luzhniki, historic, iconic and now newly renovated, stands like a stunning topaz gem in the Moscow
Doc 3: We've collected details of all 12 stadiums, including pictures of exterior and interiors, as well as aerial or satellite images of each venue.
Doc 4: The Ekaterinburg Arena has broken new ground in preparing itself for the 2018 World Cup. Originally built in the 1950s, the stadium's design
Doc 5: A football stadium is more than just a location to host a match. In the first of our Hallowed Turf series, we look at Moscow's Luzhniki