table: 1-10725629-2
columns: Rnd, Race Name, Circuit, City/Location, Date, Pole position, Fastest lap, Winning driver, Winning team, Report
Q: How many rounds were there of the Bosch Spark Plug Grand Prix?
A: SELECT COUNT Rnd FROM 1-10725629-2 WHERE Race Name = 'Bosch Spark Plug Grand Prix'