what was the name of the organism to be found in the first urine test of patient 5878 in 01/2103?
select microbiologyevents.org_name from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 5878 ) and microbiologyevents.spec_type_desc = 'urine' and microbiologyevents.org_name is not null and strftime('%y-%m',microbiologyevents.charttime) = '2103-01' order by microbiologyevents.charttime asc limit 1