CREATE TABLE table_16742 ("Race Name" CLOB, "Circuit" CLOB, "Date" CLOB, "Winning driver" CLOB, "Constructor" CLOB, "Report" CLOB)

Who constructed the I Italian Republic Grand Prix?
SELECT "Constructor" FROM table_16742 WHERE "Race Name" = 'I Italian Republic Grand Prix'
SELECT "Constructor" FROM "table_16742" WHERE "Race Name" = 'I Italian Republic Grand Prix'