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: "Sheldon Warren Cheney, was an American author and art critic, born at Berkeley, California, the son of May L. Cheney, was appointment Secretary at University of California, Berkeley for over how many years?" whose answer is forty.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Sheldon Warren Cheney appointment at University of California, Berkeley
Useful Output:

Doc 1: Author, art historian and theater critic, Sheldon Cheney was regarded as one of the most significant figures in the modernist movement in American drama.
Doc 2: Sheldon Warren Cheney was an American author and art critic, born at Berkeley, California, the son of Lemuel Warren Cheney , California lawyer and writer,
Doc 3: Cheney (1862–1942), Appointment Secretary at University of California, Berkeley for over forty years.  At first he worked in his father's real estate business,
Doc 4: Cheney (1862–1942), Appointment Secretary at University of California, Berkeley for over forty years. At first he worked in his father's real estate business,
Doc 5: Cheney (1862–1942), Appointment Secretary at University of California, Berkeley for over forty years. At first he worked in his father's real estate business,