instruction: when was the first time patient 29635 arterial bp [systolic] was measured less than 144.0 until 12/31/2103.
response: SELECT chartevents.charttime FROM chartevents WHERE chartevents.icustay_id IN (SELECT icustays.icustay_id FROM icustays WHERE icustays.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 29635)) AND chartevents.itemid IN (SELECT d_items.itemid FROM d_items WHERE d_items.label = 'arterial bp [systolic]' AND d_items.linksto = 'chartevents') AND chartevents.valuenum < 144.0 AND STRFTIME('%y-%m-%d', chartevents.charttime) <= '2103-12-31' ORDER BY chartevents.charttime LIMIT 1