หลักสูตรใดบ้างที่ Dr. Rosa Angulo-barroso สอนมาก่อน ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Which courses did Dr. Rosa Angulo-barroso teach before ?It is not neccessary to use all the tables.
 requirement:  requirement_id [ int]  requirement [ varchar]  college [ varchar] 
SELECT DISTINCT course.department, course.name, course.number FROM course, course_offering, instructor, offering_instructor WHERE course_offering.semester < (SELECT SEMESTERalias0.semester_id FROM semester AS SEMESTERalias0 WHERE SEMESTERalias0.semester = 'WN' AND SEMESTERalias0.year = 2016) AND course.course_id = course_offering.course_id AND instructor.name LIKE '%Rosa Angulo-barroso%' AND offering_instructor.instructor_id = instructor.instructor_id AND offering_instructor.offering_id = course_offering.offering_id