instruction: what was the organism found in the last urine, catheter specimen microbiology test for patient 025-19271 in their last hospital visit?
response: SELECT microlab.organism FROM microlab WHERE microlab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '025-19271' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime DESC LIMIT 1)) AND microlab.culturesite = 'urine, catheter specimen' ORDER BY microlab.culturetakentime DESC LIMIT 1