instruction: Will I be able to take BIOSTAT 855 any semester ?
response: SELECT COUNT(*) > 0 FROM semester WHERE NOT semester IN (SELECT DISTINCT SEMESTERalias1.semester FROM course AS COURSEalias0, course_offering AS COURSE_OFFERINGalias0, semester AS SEMESTERalias1 WHERE COURSEalias0.course_id = COURSE_OFFERINGalias0.course_id AND COURSEalias0.department = 'BIOSTAT' AND COURSEalias0.number = 855 AND SEMESTERalias1.semester_id = COURSE_OFFERINGalias0.semester)