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: "In which year was this British racing car manufacturer founded that built a vehicle Australian Jack Brabham drove during the 18th BRDC International Trophy?" whose answer is 1960.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Jack Brabham 18th BRDC International Trophy manufacturer
Useful Output:

Doc 1: Jack Brabham was due to retire as a driver – until his astute choice of Repco as engine builder gave him another F1 title.
Doc 2: He purchased and modified a series of road race cars manufactured by the Cooper Car Company. After racing in the 1954 New Zealand Grand Prix,
Doc 3: An important factor was Brabham starting to use Tauranac's brilliant cast alloy wheels. These were so unbreakable that they readily became en
Doc 4:  Jack on the way to victory in the BRDC International Trophy at Silverstone on May 2. By then Brabham's Cooper is a Type 51 and the engine a 2.5-litre FPF.
Doc 5: Sir Jack Brabham, Australian race-car driver, engineer, and team owner who won three Formula One Grand Prix drivers' championships.