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 is the birth date of this Spanish footballer, who was added as a holding midfielder in the 2012-13 FC Bayern Munich season?" whose answer is 2 September 1988.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Spanish footballer holding midfielder 2012-13 FC Bayern Munich
Useful Output:

Doc 1: This page displays a detailed overview of the club's current squad. It shows all personal information about the players, including age, nationality, contract
Doc 2: Explore the 2012-13 Bayern Munich UEFA Champions League roster on ESPN. Includes full details on appearances, minutes played, goals and assists.
Doc 3: Bayern agreed to pay Javi Martinez's buy-out clause of €40 million in the summer of 2012, with the Spaniard setting a transfer record in the
Doc 4: Bastian Schweinsteiger began the long road to UEFA Champions League redemption with the opening goal in FC Bayern München's 2-1 Group F home win
Doc 5: Players of Spain in 2012 ; Iniesta, Andrés, 1984-05-11, Centre Midfielder, Spain · FC Barcelona