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: "when did the surface book 1 come out?" whose answer is October 6, 2015.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Surface Book 1 release date
Useful Output:

Doc 1: The Surface Book will go on sale October 26th with prices beginning at $1,499. Preorders will begin October 7th. Microsoft: Surface Pen demo.
Doc 2: Microsoft Launches Surface Book, Its First-Ever Laptop. Advertisement. By Hayley Tsukayama, The Washington Post | Updated: 7 October 2015 10:15
Doc 3: The Microsoft Surface Book is one of the best Windows 10 devices we've ever seen and tested, and one of the most influential.
Doc 4: Release Date (Required for Apple): Not Applicable; Model Number: Laptop 7; Release Year: 2024; Lifestyle: Entertainment; Form Factor: Tablet/Laptop Convertible
Doc 5: The Surface Book has the right connections, a well built case, and a very interesting cable-tray type of round hinge. It 'sa solid, quality machine.