CREATE TABLE table_5912 ("Race Name" CLOB, "Circuit" CLOB, "City/Location" CLOB, "Date" CLOB, "Pole position" CLOB, "Fastest lap" CLOB, "Winning driver" CLOB, "Winning team" CLOB, "Report" CLOB)

Which circuit did Michael Andretti win?
SELECT "Circuit" FROM table_5912 WHERE "Winning driver" = 'michael andretti'
SELECT "Circuit" FROM "table_5912" WHERE "Winning driver" = 'michael andretti'