user: Question: How many writers had an US air date of September 25, 1993?
Columns: ['No.', '#', 'Title', 'Director', 'Writer', 'US air date', 'Storyteller', 'Villains']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [14.0, 1.0, '"The Tale of the Final Wish"', 'D. J. MacHale', 'Chloe Brown', 'June 19, 1993', 'Kristen', 'The Sandman']
SQL:

assistant: SELECT COUNT("Writer") FROM "Table" WHERE "US air date" = 'September 25, 1993';