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 wrote don't let the sun go down?" whose answer is Bernie Taupin.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who wrote don't let the sun go down
Useful Output:

Doc 1: When Elton John first recorded “Don't Let The Sun Go Down On Me,” the song was his take on the outsized, majestic pocket-symphony pop of Phil
Doc 2: I'm back again to ask your opinion on Elton John's 1974 hit 'Don't Let The Sun Go Down On Me'. This track features Carl, Bruce, and Toni Tenille
Doc 3: The song was co-written by Elton John and Bernie Taupin during a ten-day period in January 1974 along with other songs for John's Caribou album.
Doc 4: 30 Years Ago, George Michael and Elton John Duet 'Don't Let The Sun Go Down On Me' Was Released And Went No.1 On Both Sides Of The Atlantic.
Doc 5: Elton John wrote that song, while George Michael was attending one of his concerts. The song has nothing to do with George, he did dedicate the song to George,