CREATE TABLE table_77784 ("Round" FLOAT, "Grand Prix" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Winning Constructor" TEXT, "Report" TEXT)

What was the constructor when riccardo patrese was the winning driver?
SELECT "Winning Constructor" FROM table_77784 WHERE "Winning Driver" = 'riccardo patrese'
SELECT "Winning Constructor" FROM "table_77784" WHERE "Winning Driver" = 'riccardo patrese'