user: Question: How many artist(s) have a start date is 1966-12-12?
Columns: ['Episode #', 'Fan Title', 'Writer', 'Artist(s)', 'Start Date', 'End Date', 'Inc. Dailies?', 'Inc. Sundays?']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['01D', 'Catwoman', 'Whitney Ellsworth', 'Shelly Moldoff', '1966-05-30', '1966-07-09', 'yes', 'no']
SQL:

assistant: SELECT COUNT("Artist(s)") FROM "Table" WHERE "Start Date" = '1966-12-12';