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: "The Passacaglia for orchestra, Opus 1, is the first published composition of twentieth century Austrian composer Anton Webern, who was mentored by who?" whose answer is Arnold Schoenberg.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Anton Webern mentor
Useful Output:

Doc 1: Born in 1883, Webern came of age amidst the last flowering of Viennese culture. He knew the writer Karl Kraus; he was painted by Oskar Kokoschka
Doc 2: Archive in Anton von Webern: Perspectives (University of Wash- ington Press  Webern's mother and his first musical mentor. The memory of his mother
Doc 3: He followed his mentor into atonality and then serialism, and he worked as a conductor and teacher until the arrival of Naziism in Austria in
Doc 4: Anton Friedrich Wilhelm von Webern, known as simply Anton Webern, was an Austrian composer and conductor. Along with his mentor Arnold Schoenberg and his
Doc 5: Role: Mentor, teacher, and lifelong inspiration. Relationship: Webern began studying composition with Arnold Schoenberg in 1904, a pivotal