###HUMAN: How often does the course POLSCI 659 meet ?, ###ASSISTANT: SELECT DISTINCT course_offering.friday, course_offering.monday, course_offering.saturday, course_offering.sunday, course_offering.thursday, course_offering.tuesday, course_offering.wednesday 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 = 'POLSCI' AND course.number = 659 AND semester.semester = 'WN' AND semester.year = 2016