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 annual Austrian society event which takes place in the building of Vienna State Opera in Vienna was featured in the made-for-TV movie Opernball?" whose answer is The Vienna Opera Ball.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Opernball event Vienna State Opera
Useful Output:

Doc 1: The “67. Vienna Opera Ball” on February 27, 2025, once again turns the State Opera into the most famous and elegant ballroom in the world.
Doc 2: the 67th Vienna Opera Ball The Vienna Opera Ball, held at the prestigious Vienna State Opera, is one of Europe's most celebrated musical events
Doc 3: For one night only, the auditorium of Vienna's Staatsoper converts into an elegant giant ballroom. The switch takes around 30 hours and up to 500 workers.
Doc 4: Vienna Opera Ball: The 67th Vienna Opera Ball at the Vienna State Opera on Thursday, 27.02.2025. Get your ticket!
Doc 5: The Vienna Opera Ball Orchestra is the authentic expression of what is called the Viennese sound - the unadulterated interpretation of Austrian music.