Question: The 2009 Coca-Cola 600 was the which number stock car race, of the 2009 NASCAR Sprint Cup Series and the fiftieth iteration of the event, Stock car racing is a form of automobile racing found mainly and most prominently in the United States and Canada, with Australia, New Zealand and Brazil also having forms?
Sentence (from "2009 Coca-Cola 600"): Scheduled for 400 laps on the 1.5 mi quad-oval, the race was won by David Reutimann after being shortened to 227 laps because of poor weather conditions.
Relevant evidence: No