user: Question: how many formats of books authored by Day, Martin Martin Day
Columns: ['Title', 'Author', 'Reader', 'Format', 'Company', 'Release Date', 'Notes']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['The Glittering Storm', 'Cole, Stephen Stephen Cole', 'Sladen, Elisabeth Elisabeth Sladen', 'CD', 'BBC Audio', '2007-11-05 5 November 2007', 'An original audiobook, not published in book form.']
SQL:

assistant: SELECT COUNT("Format") FROM "Table" WHERE "Author" = 'Day, Martin Martin Day';