How does the sentence end?

(CNN) -- As the forklift trucks packed up the motorhomes and emptied the garages at Interlagos in Brazil, it did not take very long for the inevitable question to be asked - just how good a driver is Sebastian Vettel? Sunday's race confirmed Vettel as just the ninth driver in the sport's 62-year history to win three world titles, joining greats Juan Manuel Fangio and Michael Schumacher as the only racers to triumph in three consecutive seasons. However, what is telling -- given Vettel is still only 25 -- was the somewhat circumspect response from three world champions and former McLaren race-winner John Watson when asked to assess the Red Bull driver's talents and his place in history.

But Watson argues there is still an important lesson to be learned from

OPTIONS:
- Ayrton Senna, who raced to five championships in the 1950s.
- Brazil, who raced to five championships in the 1950s.
- CNN, who raced to five championships in the 1950s.
- Formula One, who raced to five championships in the 1950s.
- Interlagos, who raced to five championships in the 1950s.
- John Watson, who raced to five championships in the 1950s.
- Juan Manuel Fangio, who raced to five championships in the 1950s.
- McLaren, who raced to five championships in the 1950s.
- Michael Schumacher, who raced to five championships in the 1950s.
- Red Bull, who raced to five championships in the 1950s.
- Sebastian Vettel, who raced to five championships in the 1950s.
- Vettel, who raced to five championships in the 1950s.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Juan Manuel Fangio, who raced to five championships in the 1950s.