instruction: when did the last laboratory test of patient 97395 take place since 07/2105?
response: SELECT labevents.charttime FROM labevents WHERE labevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 97395) AND STRFTIME('%y-%m', labevents.charttime) >= '2105-07' ORDER BY labevents.charttime DESC LIMIT 1