PERSIAN 404 มีชั้นเรียนช่วงเช้าใดบ้าง ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Which morning classes does PERSIAN 404 have ?It is not neccessary to use all the tables.
 jobs:  job_id [ int]  job_title [ varchar]  description [ varchar]  requirement [ varchar]  city [ varchar]  state [ varchar]  country [ varchar]  zip [ int] 
SELECT DISTINCT course_offering.end_time, course_offering.start_time, semester.semester, semester.year FROM course, course_offering, semester WHERE course_offering.start_time < '12:00:00' AND course_offering.start_time >= '08:00:00' AND course.course_id = course_offering.course_id AND course.department = 'PERSIAN' AND course.number = 404 AND semester.semester = 'WN' AND semester.semester_id = course_offering.semester AND semester.year = 2016