what is the amount of lactated ringers that patient 27703 received on 11/08/2105?
select sum(inputevents_cv.amount) from inputevents_cv where inputevents_cv.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 27703 ) ) and inputevents_cv.itemid in ( select d_items.itemid from d_items where d_items.label = 'lactated ringers' and d_items.linksto = 'inputevents_cv' ) and strftime('%y-%m-%d',inputevents_cv.charttime) = '2105-11-08'