what was the total amount of promote w/fiber intake that patient 11914 had?
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 = 11914 ) ) and inputevents_cv.itemid in ( select d_items.itemid from d_items where d_items.label = 'promote w/fiber' and d_items.linksto = 'inputevents_cv' )