CREATE TABLE table_48256 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

Who was Silva's Partner in the Amarante Tournament played on a Hard Surface?
SELECT "Partner" FROM table_48256 WHERE "Surface" = 'hard' AND "Tournament" = 'amarante'
SELECT "Partner" FROM "table_48256" WHERE "Surface" = 'hard' AND "Tournament" = 'amarante'