instruction: what was the organism found in patient 025-19271's first test of urine, voided specimen since 09/2105?
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 microlab.culturesite = 'urine, voided specimen' AND STRFTIME('%y-%m', microlab.culturetakentime) >= '2105-09' ORDER BY microlab.culturetakentime LIMIT 1