what was the organism found in patient 8324's first microbiology test of the sputum in 07/last year?
select microbiologyevents.org_name from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 8324 ) and microbiologyevents.spec_type_desc = 'sputum' and microbiologyevents.org_name is not null and datetime(microbiologyevents.charttime,'start of year') = datetime(current_time,'start of year','-1 year') and strftime('%m',microbiologyevents.charttime) = '07' order by microbiologyevents.charttime asc limit 1