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: "What team has been around for longer, Societa Sportiva Calcio Napoli or UEFA Champions League?" whose answer is Società Sportiva Calcio Napoli's.
Each document should contain about 30 words, and these documents should contain useful information.

Query: When was UEFA Champions League established
Useful Output:

Doc 1: It doesn't get any bigger in European club soccer than the Champions League. Established in 1955, the now 36-team tournament features
Doc 2: The UEFA Champions League was founded in 1955, but the current format has been around since 1992. It was formally known as the European
Doc 3: The Champions League began as the 'European Cup' during the 1955-56 season, featuring 16 clubs, each from a different country. Over the next few
Doc 4: Introduced in 1955 as the European Champion Clubs' Cup (French: Coupe des Clubs Champions Européens), and commonly known as the European Cup,
Doc 5: The Champions League first began in the 1955-56 season as the European Cup. Conceived by Gabriel Hanot, the editor of the French soccer magazine