instruction: On Friday , does CDB 582 have a class ?
response: SELECT DISTINCT course_offering.friday FROM course INNER JOIN course_offering ON course.course_id = course_offering.course_id INNER JOIN semester ON semester.semester_id = course_offering.semester WHERE course.department = 'CDB' AND course.number = 582 AND semester.semester = 'WN' AND semester.year = 2016