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 second world war end in europe?" whose answer is May 1945.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the second world war end in europe
Useful Output:

Doc 1: World War II began in Europe on 1 September 1939 with the German invasion of Poland · The exact date of the war's end also is not universally agreed upon. It was
Doc 2: World War II lasted from 1939 to 1945, when the Allies defeated the Axis powers. Learn about key invasions and events during WWII, also known as the Second
Doc 3: People in Britain had expected bombing and fighting to start straight away, but it did not. The 'Phoney War' ended in April 1940, when Germany invaded Norway.
Doc 4: November 11 - World War I ends with German defeat. 1919. April 28 - League of Nations founded. ADVERTISEMENT
Doc 5: Europe's physical battles of World War II ended 75 years ago with German surrender on May 7, 1945. But that doesn't mean the fighting is over.