CREATE TABLE table_16116 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Director" TEXT, "Writer" TEXT, "US air date" TEXT, "Storyteller" TEXT, "Villains" TEXT)

How many writers had an US air date of september 25, 1993?
SELECT COUNT("Writer") FROM table_16116 WHERE "US air date" = 'September 25, 1993'
SELECT COUNT("Writer") FROM "table_16116" WHERE "US air date" = 'September 25, 1993'