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 did the technical device made by the british aeronautical engineer during the second world war do?" whose answer is counter engine cut-out.
Each document should contain about 30 words, and these documents should contain useful information.

Query: technical device made by Barnes Wallis during World War II
Useful Output:

Doc 1: It provided the structure for the twin-engine Vickers Wellington, the only RAF bomber to be produced throughout World War II. Yet, ingenious
Doc 2: His contribution to the design of the Vickers Wellington Bomber was very important it was the most numerous British built bomber of the war ,
Doc 3: Barnes developed the bouncing bomb rapidly from a concept to reality over a period of months – truly amazing by today's standards as any
Doc 4:  Barnes Wallis. An assistant chief designer at Vickers, Wallis came up with the concept of a cylindrical bomb with a hydrostatic fuse
Doc 5: In this article, we look at the life, history and achievements of Barnes Wallis, an engineer known best for the development of the bouncing bomb during WWII.