Too difficult for you?
The question was: "Which is the individual chassis (not model) with the highest number of Formula 1 Grand Prix wins? How many, and which driver scored all of these wins?"
The lead was: "History all but repeated itself in 2009."
So, let's look at the similarities between the chassis I'm looking for and the 2009 Brawn BGP001-02:
For 5 points: The chassis was raced all season by the same driver.*
4 points: The driver became world champion that year.
3 points: The team was British.
2 points: The driver was British as well.
1 point: The driver's first name starts with the letter "J".
* The chassis I'm looking for was actually raced for two full seasons, always piloted by the same driver. This driver won the vast majority of the chassis race wins in the first of those two seasons.