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: "who bought the old american embassy in london?" whose answer is Qatari Diar.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who bought the old american embassy in london
Useful Output:

Doc 1: The modernist embassy was sold to the Qatari royal family, and in 2008 a plot of land across the river in Nine Elms was purchased. Interestingly
Doc 2: How security concerns led the United States to move its London Embassy.
Doc 3: According to Reuters, local media reported the old embassy was sold for about 500 million pounds, roughly $680 million, to Qatari Diar Real
Doc 4: In 2009, when Barack Obama was president, the United States agreed to sell its embassy in Mayfair to the Gulf investor Qatari Diar for an
Doc 5: The US government sold the lease for the old embassy to Qatari real estate group Qatari Diar, which plans to turn the building into a hotel.