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 is the birth date of the person who won his first Formula One victory at the 1968 British Grand Prix?" whose answer is 7 July 1936.
Each document should contain about 30 words, and these documents should contain useful information.

Query: 1968 British Grand Prix winner
Useful Output:

Doc 1: Race winner Jo Siffert, Lotus 49B Ford, arrives in parc ferme. Race winner Jo Siffert, Lotus 49B Ford, arrives in parc ferme.
Doc 2: Click here for the information relating to the British Grand Prix. Summary event information, timetable and venue and circuit information.
Doc 3: Exoto Grand Prix Classics 1:18 Lotus 49B Joe Siffert 1968 British GP winner. Condition is New. Sent with Australia Post Standard. Have one to sell?
Doc 4: 1968 World Drivers' Championship table ; 1, Graham Hill, Lotus 49 - Cosworth DFV V8 Lotus 49B- Cosworth DFV V8, 48 pts, 3 wins ; 2, Jackie Stewart, Matra MS10 -
Doc 5: British fans has lost both Jim Clark and Mike Spence but Graham Hill arrived at Brands Hatch with a big lead in the World Championship and with seven other