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: "War at the Wall Street Journal, is the first book released by author and journalist Sarah Ellison, published on May 12, 2010, the book is an account of which Australian-born American media mogul's, purchase of the paper from the Bankroft family in 2007?" whose answer is Keith Rupert Murdoch.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Who purchased the Wall Street Journal from the Bankroft family in 2007?
Useful Output:

Doc 1: Also, Dow Jones' board said it was taking the lead in pursuing talks with News Corp., taking over from the Bancroft family. Dow Jones shares
Doc 2: We revisit Sarah Ellison's blow-by-blow account of how media baron Rupert Murdoch wrested the Wall Street Journal away from the family that had controlled it
Doc 3: Barron's descendants, the Bancroft family, would continue to control the company until 2007.  The company's planned and eventual acquisition by News Corp in
Doc 4: NEW YORK – With Rupert Murdoch reportedly sealing a tentative agreement to acquire The Wall Street Journal, the question now turns to the
Doc 5: The News of the World scandal has made the Bancroft family, the former controllers of the Wall Street Journal, regret selling their newspaper to Rupert Murdoch.