CREATE TABLE table_60589 ("Name" CLOB, "Circuit" CLOB, "Date" CLOB, "Winning driver" CLOB, "Winning constructor" CLOB, "Report" CLOB)

What Date has a Winning driver of ugo sivocci?
SELECT "Date" FROM table_60589 WHERE "Winning driver" = 'ugo sivocci'
SELECT "Date" FROM "table_60589" WHERE "Winning driver" = 'ugo sivocci'