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 we go into europe in ww2?" whose answer is 9 July 1943.
Each document should contain about 30 words, and these documents should contain useful information.

Query: When did Allied forces enter Europe during World War II?
Useful Output:

Doc 1: When did World War II begin? World War II formally began on September 1, 1939 when Germany invaded Poland without a formal declaration of war. In support of
Doc 2: Western Europe (1940–1941) In April 1940, Germany invaded Denmark and Norway to protect shipments of iron ore from Sweden, which the Allies were attempting to
Doc 3: September 1, 1939 - Nazis invade Poland. September 3, 1939 - Britain, France, Australia and New Zealand declare war on Germany.
Doc 4: August 15, 1944 Allied forces land in southern France near Nice and advance rapidly towards the Rhine River to the northeast. August 20–25, 1944 Allied troops
Doc 5: The D-Day operation of June 6, 1944, brought together the land, air, and sea forces of the allied armies in what became known as the largest amphibious