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 luge start in the olympics?" whose answer is 1964.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did luge start in the olympics
Useful Output:

Doc 1: Luge, the French word for a small sled, has been around for centuries, but it started to enter its modern form with dedicated tracks in Swiss
Doc 2: Luge, in this case two-man, was first introduced to the Winter Olympics in 1964 in Innsbruck, Austria. Robert Riger/Getty Images.
Doc 3: One of the most appealing things about luge is its name. Luge. · They've been lugeing in the Olympics since 1964. · The start of the race is vital
Doc 4: A luge is a sporting event where one to two competitors sled on their backs and race to the finish line with the fastest time possible. It requires the use of
Doc 5:  start down the mountain, to the area where the women's luge athletes were scheduled to start their race. The near vertical drop at the beginning of the luge