did magnesium sulfate, hydralazine, or ns have been prescribed for patient 80555 in 12/2105?
select count(*)>0 from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 80555 ) and prescriptions.drug in ( 'magnesium sulfate', 'hydralazine', 'ns' ) and strftime('%y-%m',prescriptions.startdate) = '2105-12'