instruction: when was the last time patient 028-25829 was diagnosed with lower urinary tract infection in their last hospital encounter?
response: SELECT diagnosis.diagnosistime FROM diagnosis WHERE diagnosis.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '028-25829' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime DESC LIMIT 1)) AND diagnosis.diagnosisname = 'lower urinary tract infection' ORDER BY diagnosis.diagnosistime DESC LIMIT 1