ใครเป็นผู้สอน ULCS ในฤดูหนาวหน้า ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Who is teaching ULCS next Winter ?It is not neccessary to use all the tables.
 course_offering:  offering_id [ int]  course_id [ int]  semester [ int]  section_number [ int]  start_time [ time]  end_time [ time]  monday [ varchar]  tuesday [ varchar]  wednesday [ varchar]  thursday [ varchar]  friday [ varchar]  saturday [ varchar]  sunday [ varchar]  has_final_project [ varchar]  has_final_exam [ varchar]  textbook [ varchar]  class_address [ varchar]  allow_audit [ varchar] 
SELECT DISTINCT instructor.name FROM course INNER JOIN course_offering ON course.course_id = course_offering.course_id INNER JOIN semester ON semester.semester_id = course_offering.semester INNER JOIN program_course ON program_course.course_id = course_offering.course_id INNER JOIN offering_instructor ON offering_instructor.offering_id = course_offering.offering_id INNER JOIN instructor ON offering_instructor.instructor_id = instructor.instructor_id WHERE program_course.category LIKE '%ULCS%' AND semester.semester = 'Winter' AND semester.year = 2017