CREATE TABLE table_51281 ("Name" TEXT, "Short name" TEXT, "City" TEXT, "Region" TEXT, "Girone" TEXT, "Home venue" TEXT)

What region has giuseppe sivori as a home venue?
SELECT "Region" FROM table_51281 WHERE "Home venue" = 'giuseppe sivori'
SELECT "Region" FROM "table_51281" WHERE "Home venue" = 'giuseppe sivori'