user: Question: How many directors were there for the film Course Completed?
Columns: ['Year (Ceremony)', 'Film title used in nomination', 'Original title', 'Director', 'Result']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1956 (29th)', 'Afternoon of the Bulls', 'Tarde de toros', 'Ladislao Vajda Category:Articles with hCards', 'Not Nominated']
SQL:

assistant: SELECT COUNT("Director") FROM "Table" WHERE "Film title used in nomination" = 'Course Completed';