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: "how many times have forest won the european cup?" whose answer is 2.
Each document should contain about 30 words, and these documents should contain useful information.

Query: FC Red Star Belgrade European Cup wins
Useful Output:

Doc 1: European Cup Champions. The crown of success finally arrived at Belgrade Marakana Stadium in 1991 when the Golden generation of the Serbian club won European
Doc 2: Red Star Belgrade's 1991 European Cup Win was an underdog victory that defied expectations. The Belgrade outfit beat the likes of Rangers
Doc 3: They won the old European Cup in 1991, beating Olympique de Marseille on penalties after a 0-0 draw in Bari, Italy. Legends from that team include Darko Pancev
Doc 4: Support AFC Finners On Patreon-https://www.patreon.com/AFCFinners In 1991, Red Star Belgrade shocked the footballing world by defeating
Doc 5: Watch Red Star Belgrade v Marseille European Cup Final 29-05-1991 - TJS Sports on Dailymotion.