CREATE TABLE table_56091 ("Club" TEXT, "City" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "2011\\u201312 season" TEXT)

What is the name of the stadium for the city of melfi?
SELECT "Stadium" FROM table_56091 WHERE "City" = 'melfi'
SELECT "Stadium" FROM "table_56091" WHERE "City" = 'melfi'