instruction: was the morphine 4 mg/1 ml 1 ml syr prescribed to patient 016-35481 since 3 years ago?
response: SELECT COUNT(*) > 0 FROM medication WHERE medication.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '016-35481')) AND medication.drugname = 'morphine 4 mg/1 ml 1 ml syr' AND DATETIME(medication.drugstarttime) >= DATETIME(CURRENT_TIME(), '-3 year')