CREATE TABLE table_4766 ("Name" CLOB, "Pole Position" CLOB, "Fastest Lap" CLOB, "Winning driver" CLOB, "Winning team" CLOB, "Report" CLOB)

What race did Bobby Unser win?
SELECT "Name" FROM table_4766 WHERE "Winning driver" = 'bobby unser'
SELECT "Name" FROM "table_4766" WHERE "Winning driver" = 'bobby unser'