CREATE TABLE table_48848 ("Result" TEXT, "Opponent" TEXT, "Method" TEXT, "Date" TEXT, "Round" FLOAT)

Which Round has a Method of ko, and an Opponent of alfonse d'amore?
SELECT "Round" FROM table_48848 WHERE "Method" = 'ko' AND "Opponent" = 'alfonse d''amore'
SELECT "Round" FROM "table_48848" WHERE "Method" = 'ko' AND "Opponent" = 'alfonse d\'amore'