instruction: show me the last ward identification of patient 030-40287 until 2 years ago?
response: SELECT patient.wardid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '030-40287') AND DATETIME(patient.unitadmittime) <= DATETIME(CURRENT_TIME(), '-2 year') ORDER BY patient.unitadmittime DESC LIMIT 1