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: "Banca Cívica, S.A. was a bank created as a result of the European debt crisis as an emergency response by the Spanish government, the European debt crisis, was a multi-year debt crisis that has been taking place in the European Union, since the end of what year?" whose answer is 2009.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the european debt crisis start
Useful Output:

Doc 1: It started a long time ago when the EURo was introduced and has just built and built since then with the Greek then Italian Crisis. The European
Doc 2: In 1992, the Maastricht Treaty formally created the European Union, and led to the circulation of the euro currency in January 2002. Nineteen of
Doc 3: In 2007, the eurozone was a crisis waiting to happen. During the early 'good years' of the euro – when most considered it as a good if not a
Doc 4: The onset of crisis was in late 2009 when the Greek government disclosed that its budget deficits were far higher than previously thought. Greece called for
Doc 5: The euro-zone debt crisis was a period of economic uncertainty in the euro zone beginning in 2009 that was triggered by high levels of public