when did patient 54825 be admitted to the hospital via the transfer from skilled nur for the last time a year before?
select admissions.admittime from admissions where admissions.subject_id = 54825 and admissions.admission_location = 'transfer from skilled nur' and datetime(admissions.admittime,'start of year') = datetime(current_time,'start of year','-1 year') order by admissions.admittime desc limit 1