CREATE TABLE table_72675 ("Round" CLOB, "Race" FLOAT, "Circuit" CLOB, "Date" CLOB, "Pole Position" CLOB, "Fastest Lap" CLOB, "Winning driver" CLOB, "Winning team" CLOB)

Which race number in the Indy F3 Challenge circuit had John Martin in pole position?
SELECT "Race" FROM table_72675 WHERE "Circuit" = 'Indy F3 Challenge' AND "Pole Position" = 'John Martin'
SELECT "Race" FROM "table_72675" WHERE "Circuit" = 'Indy F3 Challenge' AND "Pole Position" = 'John Martin'