CREATE TABLE table_28108 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Director" TEXT, "Writer ( s ) " TEXT, "Airdate" TEXT)

Who wrote the episode with series number 56?
SELECT "Writer(s)" FROM table_28108 WHERE "Series #" = '56'
SELECT "Writer(s)" FROM "table_28108" WHERE "Series #" = '56'