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: "The band that released the song "Back to the 80's" have sold approximately how many albums and singles?" whose answer is 33 million.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Aqua band sales
Useful Output:

Doc 1:  selling more than 8 million copies in the US, Europe and Canada. • The band's second album, Aquarius, had a respectable showing in Europe, reaching No. 1 in
Doc 2: Aqua girl singer best sale, Barbie Girl The Aqua song s journey from Mattel lawsuits to the best sale.
Doc 3: Oh, also, they're the single best-selling Danish band of all time with about 33 million units sold — and if you knew that, you are either
Doc 4:  Aqua's debut album Aquarium to triple-platinum sales all by itself. Aqua's U.S. label MCA pulled off this trick through chart gamesmanship
Doc 5: The group sold an estimated 33 million albums and singles, making them the most profitable Danish band ever. The group managed to top the UK