Find courses that ran in Fall 2009 but not in Spring 2010.
SELECT course_id FROM SECTION WHERE semester  =  'Fall' AND YEAR  =  2009 EXCEPT SELECT course_id FROM SECTION WHERE semester  =  'Spring' AND YEAR  =  2010
2009 sonbaharında yayınlanan ancak 2010 ilkbaharında olmayan kursları bulun.