CREATE TABLE table_16285 ("Rnd" CLOB, "Race Name" CLOB, "Circuit" CLOB, "City/Location" CLOB, "Date" CLOB, "Pole position" CLOB, "Fastest lap" CLOB, "Winning driver" CLOB, "Winning team" CLOB, "Report" CLOB)

How many rounds were there of the Bosch Spark Plug Grand Prix?
SELECT COUNT("Rnd") FROM table_16285 WHERE "Race Name" = 'Bosch Spark Plug Grand Prix'
SELECT COUNT("Rnd") FROM "table_16285" WHERE "Race Name" = 'Bosch Spark Plug Grand Prix'