instruction: Are both these classes allowed to be taken in the same semester , UP 634 and UP 650 ?
response: SELECT COUNT(*) > 0 FROM course AS COURSE_0, course AS COURSE_1, course_offering AS COURSE_OFFERING_0, course_offering AS COURSE_OFFERING_1, course_prerequisite WHERE COURSE_OFFERING_1.semester = COURSE_OFFERING_0.semester AND COURSE_0.course_id = COURSE_OFFERING_0.course_id AND COURSE_0.department = 'UP' AND COURSE_0.number = 634 AND COURSE_1.course_id = COURSE_OFFERING_1.course_id AND COURSE_1.department = 'UP' AND COURSE_1.number = 650 AND (NOT ((COURSE_1.course_id = course_prerequisite.course_id AND COURSE_0.course_id = course_prerequisite.pre_course_id) OR (COURSE_1.course_id = course_prerequisite.pre_course_id AND COURSE_0.course_id = course_prerequisite.course_id)))